/usr/X11R6 if USE_IMAKE or USE_X11 is set. It is mostly designed
after the XFree86 distribution, but also includes some of our own
goodies (libexec, share/doc, etc/rc.d).
(2) Full support for per-port dependency target. An optional
":<target>" can be added to any of the *_DEPENDS variables. Do
not attempt to print out anything about dependencies if NO_DEPENDS
is set (there was already too much code duplication, and this
extra colon has really pushed it over the limit).
Requested by: jfitz
(3) Make "reinstal" pmake-safe.
Reminded in an e-mail from: jkh
faf42a34df