need loaded; it's more efficient, and works even if the last unnecessary
 xrandr symbol failed to load. Otherwise, leave the original loadso error, so
 the end user can find out what symbol failed.

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%402342