Log message:
Change the format of BUILDLINK_ORDER to contain depth information as well,
and add a new helper target and script, "show-buildlink3", that outputs
a listing of the buildlink3.mk files included as well as the depth at
which they are included.

For example, "make show-buildlink3" in fonts/Xft2 displays:

	zlib
	fontconfig
	    iconv
	    zlib
	    freetype2
	    expat
	freetype2
	Xrender
	    renderproto

Log message:
Track information in a new variable BUILDLINK_ORDER that informs us
of the order in which buildlink3.mk files are (recursively) included
by a package Makefile.

Log message:
add a symlink for libltdl.dylib when OPSYS == Darwin
This fixes lang/kaffe build

Log message:
Aligned the last line of the buildlink3.mk files with the first line, so
that they look nicer.

Log message:
Over 1200 files touched but no revisions bumped :)

RECOMMENDED is removed. It becomes ABI_DEPENDS.

BUILDLINK_RECOMMENDED.foo becomes BUILDLINK_ABI_DEPENDS.foo.

BUILDLINK_DEPENDS.foo becomes BUILDLINK_API_DEPENDS.foo.

BUILDLINK_DEPENDS does not change.

IGNORE_RECOMMENDED (which defaulted to "no") becomes USE_ABI_DEPENDS
which defaults to "yes".

Added to obsolete.mk checking for IGNORE_RECOMMENDED.

I did not manually go through and fix any aesthetic tab/spacing issues.

I have tested the above patch on DragonFly building and packaging
subversion and pkglint and their many dependencies.

I have also tested USE_ABI_DEPENDS=no on my NetBSD workstation (where I
have used IGNORE_RECOMMENDED for a long time). I have been an active user
of IGNORE_RECOMMENDED since it was available.

As suggested, I removed the documentation sentences suggesting bumping for
"security" issues.

As discussed on tech-pkg.

I will commit to revbump, pkglint, pkg_install, createbuildlink separately.

Note that if you use wip, it will fail!  I will commit to pkgsrc-wip
later (within day).

Log message:
allow LIBLTDL_CONVENIENCE_SUBDIR to be a list of directories;
there is at least one prospective pkg which contains two copies
of libltdl

Log message:
Update libtool to 1.5.22.  Too many changes for CVS commit logs; here's
some highlighted changes:

* Fixes minor /tmp race condition bug.
* Integrated Interix support; no longer requires pkgsrc hackery.
* shlibtool is a wrapper using the (now working) "--tag=disable-static".
* Several other bugs fixed, removing some pkgsrc-local changes.

Log message:
Add LIBLTDL_CONVENIENCE_SUBDIR variable to allow packages to indicate that
bundled libltdl is not in the subdir "libltdl".

Log message:
dlopen.buildlink3.mk will automatically include dlcompat/buildlink3.mk
only on Darwin, so remove OPSYS check in dlcompat/buildlink3.mk and
make packages include dlopen.buildlink3.mk instead.

Log message:
Not all implementations of ln(1) can handle -fs arguments where the target
still exists.  Explicitly rm the target before ln.