Don't redirect errors to /dev/null and don't return true(1)
unconditionally. Instead, don't check for the existence of index.theme.
This will allow us to catch errors that may be happening because of a
missing dependency in the chain.
Some hidden issues may appear, in which case please contact me.
discussed with and ok blind jasper@
- add various other missing WANTLIB (and LIB_DEPENDS in some cases)
- while there move PKGNAME=..pX to REVISION, and move some ports
to new-style LIB_DEPENDS
original diff from Brad, extensive checking by me (clean build of everything
related to liboil).
