Log message:
Massive cleanup of buildlink3.mk and builtin.mk files in pkgsrc.
Several changes are involved since they are all interrelated.  These
changes affect about 1000 files.

The first major change is rewriting bsd.builtin.mk as well as all of
the builtin.mk files to follow the new example in bsd.builtin.mk.
The loop to include all of the builtin.mk files needed by the package
is moved from bsd.builtin.mk and into bsd.buildlink3.mk.  bsd.builtin.mk
is now included by each of the individual builtin.mk files and provides
some common logic for all of the builtin.mk files.  Currently, this
includes the computation for whether the native or pkgsrc version of
the package is preferred.  This causes USE_BUILTIN.* to be correctly
set when one builtin.mk file includes another.

The second major change is teach the builtin.mk files to consider
files under ${LOCALBASE} to be from pkgsrc-controlled packages.  Most
of the builtin.mk files test for the presence of built-in software by
checking for the existence of certain files, e.g. <pthread.h>, and we
now assume that if that file is under ${LOCALBASE}, then it must be
from pkgsrc.  This modification is a nod toward LOCALBASE=/usr.  The
exceptions to this new check are the X11 distribution packages, which
are handled specially as noted below.

The third major change is providing builtin.mk and version.mk files
for each of the X11 distribution packages in pkgsrc.  The builtin.mk
file can detect whether the native X11 distribution is the same as
the one provided by pkgsrc, and the version.mk file computes the
version of the X11 distribution package, whether it's built-in or not.

The fourth major change is that the buildlink3.mk files for X11 packages
that install parts which are part of X11 distribution packages, e.g.
Xpm, Xcursor, etc., now use imake to query the X11 distribution for
whether the software is already provided by the X11 distribution.
This is more accurate than grepping for a symbol name in the imake
config files.  Using imake required sprinkling various builtin-imake.mk
helper files into pkgsrc directories.  These files are used as input
to imake since imake can't use stdin for that purpose.

The fifth major change is in how packages note that they use X11.
Instead of setting USE_X11, package Makefiles should now include
x11.buildlink3.mk instead.  This causes the X11 package buildlink3
and builtin logic to be executed at the correct place for buildlink3.mk
and builtin.mk files that previously set USE_X11, and fixes packages
that relied on buildlink3.mk files to implicitly note that X11 is
needed.  Package buildlink3.mk should also include x11.buildlink3.mk
when linking against the package libraries requires also linking
against the X11 libraries.  Where it was obvious, redundant inclusions
of x11.buildlink3.mk have been removed.

Log message:
Convert to options framework.

Log message:
Do not pull in esound/bl3.mk regardless of the setting
of USE_ESOUND, because the esound library is only used in a dynamically
loaded module. Noted by tv@.

Log message:
Fix autoconf argument quoting.

Log message:
regen with correct offsets

Log message:
Removed trailing white-space.

Log message:
Remove USE_GNU_TOOLS and replace with the correct USE_TOOLS definitions:

	USE_GNU_TOOLS	-> USE_TOOLS
	awk		-> gawk
	m4		-> gm4
	make		-> gmake
	sed		-> gsed
	yacc		-> bison

Log message:
Remove USE_BUILDLINK3 and NO_BUILDLINK; these are no longer used.

Log message:
Add RMD160 digests.

Log message:
Update to 4.1.18:

Changes from 4.1.17 to 4.1.18 (Januari 2005)

   Peter Hull fixed a bug that caused rest() to wait too long on MacOS X.

   Tore Halse made the Allegro window always appear centred in Windows.

   Peter Wang fixed a lot of warnings in the code and did a lot of cosmetic
   fixes as well.

   Grzegorz Adam Hankiewicz added short description support to the MAN and
   HTML documentation.

   Milan Mimica fixed a bug in the keyconf utility.

   Peter Hull fixed some issues compiling Allegro for MacOS X.

   Marcio Fialho fixed a warning when compiling Allegro with DJGPP.

   Evert Glebbeek fixed a bug that prevented system cursors from working in
   Windows, as pointed out by Peter Johanson.

   Evert Glebbeek added font loading routine and various other font
   functions to the library.

   Peter Wang added custom packfile functions and packfile vtables.

   Peter Wang decoupled the packfile compression code from the packfile
   routines.

   Daniel Schlyder fixed some problems with the font loading code.

   AJ added 64 bit, SSE2 and SSE3 detection code.

   Daniel Schlyder fixed some warnings with MinGW gcc 3.4.2

   Peter Hull made the file selector work properly with directories that have
   more than 2048 entries.

   Marcio Afonso Arimura Fialho fixed some problems with the DJGPP version and
   the VBE/AF driver.

   Phil Shenk clarified the MSVC build docs.

   Michal Molhanec fixed a problem with long filenames in the MSVC build
   process and added a --msvcpaths flag to the fix.bat script.

   Grzegorz Adam Hankiewicz made a lot of improvements to the documentation.

   Peter Wang made some modifications to allegro_message() in X11.

   Evert Glebbeek added blender mode defines and activated the gfx_vtable
   set_blender_mode() function in the source.

   Evert Glebbeek added gui_set_screen and gui_get_screen functions and a
   set_mouse_cursor_bitmap function.

   Peter Wang made scancode_to_name never return NULL.

   Peter Wang fixed some problems if the Linux joystick driver.

   Grzegorz Adam Hankiewicz added a lot of ASSERTions to the code.

   Elias Pschernig added special Ctrl-Alt-End and Pause key handlers to the
   X11 keyboard driver.

   Elias Pschernig fixed a problem with the mouse acceleration in Windows.

=======================================================================
============ Changes from 4.1.16 to 4.1.17 (December 2004) ============
=======================================================================

   Sven Sandberg fixed a few problems with the sprite rotation code.

   Sven Sandberg optimized blitting between different colour depths.

   Evert Glebbeek added support for the use of native window manager cursors.

   Chris Robinson made install_allegro() check if the library version matches
   the version of the headerfiles installed.

   Peter Wang fixed some problems with rest() on UNIX systems.

   Evert Glebbeek added an is_windowed_mode() function.

   Elias Pschernig added the scancode_to_name function.

   Elias Pschernig made rest use usleep() on MacOSX.

   Chris Robinson fixed the incorrect use of -export-dynamic on UNIX

   Elias Pschernig, Chris Robinson and Peter Wang fixed XOR mode leaving
   droppings in X11.

   Elias Pschernig fixed several dependency issues.

   James Lohr fixed a problem with mouse acceleration in fullscreen modes under
   Windows.

   Peter Wang fixed a problem in the TGA loader.

   Lennart Steinke contributed keyboard layout detection code for Windows.

   Peter Wang fixed a bug that caused Allegro to crash if it failed to
   initialize.

   Peter Wang fixed a deadlock related to X vsync emulation.

   Daniel Schlyder fixed make uninstall with mingw make.

   Elias Pschernig fixed QNX issue of not including utimer.c

   Angelo Mottola fixed compilation problems on BeOS and fixed the detection
   of VRAM.

   Evert Glebbeek fixed compilation problems on *BSD.

   Elias Pschernig made the X11 window hidden in GFX_TEXT mode.

   Peter Wang removed remapping of numpad keys when NumLock was off in Linux

   David A. Capello made override_config_file also be used for writing to the
   config file.

   Julien Cugniere added an X11 message box for allegro_message under X11.

   Vitaliy Chetverikov a small bug in the GUI where the return value of
   MSG_IDLE was ignored.

   Peter Wang made several improvements to the examples.

   Grzegorz Adam Hankiewicz made a lot of improvements to the documentation.

   Elias Pschernig made make-install not build examples.

   Peter Wang fixed several instances of symbols not declared static that should
   have been.

   Elias Pschernig replaced the X11 keyboard driver with a new XIM driver.

   Peter Wang fixed a problem with Linux headers and Allegro headers both
   declaring KEY_ constants, as pointed out by David A. Capello.

   Elias Pschernig fixed X11 async reply in DGA2 mode detection due to missing
   XLOCK/XUNLOCK

   Peter Wang fixed problems in ex3buf, which was trying to lock symbols which
   had been removed.

   Elias Pschernig cleaned up grabber/dat documentation.

   Daniel Schlyder added ALLEGRO_LIB_BUILD flag for gcc variants not using
   configure.

   Elias Pschernig fixed bugs in matrix_to_quat and get_align_matrix.

   Evert Glebbeek fixed a problem with the X11 port when
   ALLEGRO_MULTITHREADED was not defined.

   Matthew Leverton added support for a fourth mouse button to the Windows port.

   Michal Molhanec added a faq section about the giftware license.

   Elias Pschernig added the license disclaimer to the docs.

   Evert Glebbeek added missing vtable entries for AllegroGL, as requested by
   Robert Ohannessian.

   Dustin Dettmer spotted a typo in save_bitmap.

   Sam Hocevar removed deprecated use of init_read_test, test_byte_read, etc.

   Peter Wang fixed a bug in the Windows keyboard driver.