tell FREETYPE_DIR to cmake.
fixes PR pkg/48087
* BSD/OS and OSF/1 are also missing `z' modifier support for printf(3) format.
* bare `zu' modifier is used, it should be replaced with `PRIzu` instead.

Fixes crash with `pkg_admin rebuild' on platforms missing %z support,
PR pkg/48070.
Update config.{guess,sub} from pkgsrc/mk/gnu-configure, for the case
required in bootstrap pkgsrc.
Fix build on SunOS (LDFLAGS.SunOS+= -lsocket -lnsl).
Do not install empty man pages (they confuse makemandb).
Bump PKGREVISION.

Reported upstream at https://bugs.freedesktop.org/show_bug.cgi?id=67714
Updated converters/fribidi to 0.19.5nb2