- Remove USE_XLIB/USE_X_PREFIX/USE_XPM in favor of USE_XORG
- Remove X11BASE support in favor of LOCALBASE or PREFIX
- Use USE_LDCONFIG instead of INSTALLS_SHLIB
- Remove unneeded USE_GCC 3.4+
Thanks to all Helpers:
Dmitry Marakasov, Chess Griffin, beech@, dinoex, rafan, gahr,
ehaupt, nox, itetcu, flz, pav
PR: 116263
Tested on: pointyhat
Approved by: portmgr (pav)