+ set MAKE_PROGRAM variable in bsd.port.mk to either ${GMAKE} or
${MAKE}, and use it in do-build and do-install targets
+ if X11 package, and man pages are installed, add install.man to
${INSTALL_TARGET}, rather than using a separate command to do this.
Also added CATn= blah.0, similar to MANn= blah.1, which installs
pre-formatted man pages, like the ones imake produces.