Stagify a bunch of ports maintained by flz

While here:

• graphics/icoconvert:
  • Respect CC
  • Use modern LIB_DEPENDS
• net/grdesktop:
  • Convert gnomehack to pathfix
• net/ldapsh:
  • Use shebangfix instead of custom post-patch target
• net-im/py-jabber:
  • Use autoplist
• net-p2p/bnbt:
  • Use the options framework
  • Convert to dos2unix
  • Respect CXX
  • Do not renamed base on option
• sysutils/testdisk:
  • Update to 6.14
  • Use options helpers
  • Use modern LIB_DEPENDS
  • Convert USE_BZIP2 -> USES=tar:bzip2