Log message:
Set BUILDLINK_ABI_DEPENDS correctly (with +=, not ?=)
It turns out there were a lot of these.

Log message:
Drop dependency on libXp (from Imake)

* libXp was used by Xaw8, but it had been obsolated, and in pkgsrc,
  x11/libXaw/buildlink3.mk had been switched to pick up Xaw7 by default.
* With x11/xorg-cf-files, libXp was offered with XawClientLibs,
  but updated to 1.0.4, it was removed.
* And pkgsrc had been switched to use always xorg-cf-files and imake from pkgsrc,
  so all platforms should not require libXp from libXaw with Imake.

Bump PKGREVISION.

Log message:
Remove USE_DIRS from pkgsrc.

Shared directories can now be created independently by the pacakges
needing them and will be removed automatically by pkg_delete when empty.

Packages needing empty directories can use the @pkgdir command in PLIST.

Discussed and ok'd in thread starting at
http://mail-index.netbsd.org/tech-pkg/2009/06/30/msg003546.html

Log message:
Remove @dirrm entries from PLISTs

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:
xterm build fails without Xmu, so we include it.

Log message:
Add DESTDIR support.

Log message:
Fixed pkglint warnings.

Log message:
Reset maintainer on his request.

Log message:
Add logic gleefully ripped from x11/Xaw3d/buildlink3.mk to make these
libraries work properly with xaw.buildlink3.mk.  That's better!

This was done so that X/Open Curses (pkgsrc-wip/pdcurses) could
have a chance of using these libraries. ;)