Log message:
Nuke some lines from createbuildlink that never should have been
committed.

Log message:
Add SHA512 digests for distfiles for devel category

Issues found with existing distfiles:
	distfiles/eclipse-sourceBuild-srcIncluded-3.0.1.zip
	distfiles/fortran-utils-1.1.tar.gz
	distfiles/ivykis-0.39.tar.gz
	distfiles/enum-1.11.tar.gz
	distfiles/pvs-3.2-libraries.tgz
	distfiles/pvs-3.2-linux.tgz
	distfiles/pvs-3.2-solaris.tgz
	distfiles/pvs-3.2-system.tgz
No changes made to these distinfo files.

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.

Log message:
Use find-headers instead of find-files to detect builtin header files.

Log message:
Drop superfluous PKG_DESTDIR_SUPPORT, "user-destdir" is default these days.

Log message:
Fix build with c99 compilers

Log message:
Simply and speed up buildlink3.mk files and processing.
This changes the buildlink3.mk files to use an include guard for the
recursive include. The use of BUILDLINK_DEPTH, BUILDLINK_DEPENDS,
BUILDLINK_PACKAGES and BUILDLINK_ORDER is handled by a single new
variable BUILDLINK_TREE. Each buildlink3.mk file adds a pair of
enter/exit marker, which can be used to reconstruct the tree and
to determine first level includes. Avoiding := for large variables
(BUILDLINK_ORDER) speeds up parse time as += has linear complexity.
The include guard reduces system time by avoiding reading files over and
over again. For complex packages this reduces both %user and %sys time to
half of the former time.

Log message:
libtoolize and add builtin.mk. Bump revision.

Log message:
NO_MTREE support.

Log message:
Import the argp-1.3 argument functionality - this package is the
argp-standalone functionality from FreeBSD ports.

	Argp is an interface for parsing unix-style argument vectors.

	Argp provides features unavailable in the more commonly used getopt
	interface.  These features include automatically producing output in
	response to the `--help' and `--version' options, as described in the
	GNU coding standards.  Using argp makes it less likely that
	programmers will neglect to implement these additional options or keep
	them up to date.

	Argp also provides the ability to merge several independently defined
	option parsers into one, mediating conflicts between them and making
	the result appear seamless.  A library can export an argp option
	parser that user programs might employ in conjunction with their own
	option parsers, resulting in less work for the user programs.  Some
	programs may use only argument parsers exported by libraries, thereby
	achieving consistent and efficient option-parsing for abstractions
	implemented by the libraries.

	The header file <argp.h> should be included to use argp.