Update to 0.72

* Add some libraries from OpenBSD 5.2.
* Set CHECK_SHLIBS_SUPPORTED=no, OpenBSD 5.2's libraries have no RPATH in readelf output.
Updated pkgtools/x11-links to 0.72
Fix dynamic extension loading on SunOS, where successful dlopen() may
return non-NULL too and lighttpd was evaluating as failure.
Bump PKGREVISION.
Switch HPN patch site to the one FreeBSD uses, upstream have hidden it
behind a session-based page.
Improvements contributed by Richard Palo in PR pkg/pkg/47420:
- Build fixes for Solaris 11 (using GCC 4.7)
- Install example for new config file format
- Replace hard-coded path to state directory in various files.
Fix build with newer scons and update PLIST. Bump revision.
Note update of the "milter-greylist" package to version 4.4.2nb1.
Fix build with clang by using more void and proper return values.
Don't use -Bdynamic and -Bstatic directly.
Prefer in-tree bsdtar
Fix main. Bump revision.
Apply patch of patch.
Fix build on NetBSD when using *at.
Explicitly include sys/vmmeter.h on NetBSD.
Don't conflict with libm.
Fix main.
Avoid conflict with log(3).
Honour user CFLAGS.
Update squid31 to 3.1.23.

Changes to squid-3.1.23 (09 Jan 2013):

	- Additional fixes for CVE-2012-5643 / SQUID:2012-1
Explicitly include utmpx.h for NetBSD/current.