modular xorg.
- supply corresponding USE_XORG for all imake-using ports that need it
- USE_IMAKE no longer implies USE_XLIB in absence of USE_XORG
- retire USE_X_PREFIX which is not really used anywhere after the
above change
- a few minor nits like whitespace and SF macro
Tested by: 2 tinderbox runs by pav
Approved by: portmgr (pav)
WARN: Makefile: since you already have USE_IMAKE, you don't need USE_X_PREFIX,
so drop USE_X_PREFIX
PR: ports/94783
Submitted by: Ion-Mihai "IOnut" Tetcu <itetcu@people.tecnik93.com>
Approved by: maintainer timeout
o making/installing html manpages.
o replace magic number with macro in DISTNAME.
o move post-extract to post-patch to get as-is distfile after make extract.
