• Remove bogus (in presence of USE_GITHUB) USES=tar*
• Switch to options helpers
• Fix build with GBVAM and/or without SDL (add mising files and conditions to plist)
• Fix manpage installation (patch mandir instead of moving file later, no need to empty directory in the plist)
• Fix build with LIRC (remove double patching)
• Fix build with LINK (use correct version of SFML)

Approved by: portmgr blanket