New variables:
PATCH_SITES: patch equivalent of MASTER_SITES, overridable with
. MASTER_SITE_OVERRIDE.
PATCHFILES: Additional files to fetch and give to patch before
. applying the ones in patches/patch-*. If name ends
. with ".gz" or ".Z", it will be piped through zcat first.
Plus PATCH_DIST_STRIP and PATCH_DIST_ARGS that serve the same functions
as PATCH_STRIP and PATCH_ARGS for patches in patches/patch-*.
In the documentation and echo messages, I used the term "distributed
patches" and "FreeBSD patches" to refer to ${PATCHFILES} and patches/patch-*.
If you can come up with better names, by all means go ahead and fix them.
"grep PATCH /usr/ports/*/*/Makefile" reveals seven ports (mule, jless,
jtcl, jtk, dgd, less, color_xterm, gee I wonder why I'm the one who
implemented this) that can benefit from this. I'm now diving headlong
into /usr/ports to fix their Makefiles.