remove rules for .d generation

They are generated automatically and the rules do not work if the
ALL_CPPFLAGS are not properly set.
add test pixman plugin
Merge branch 'devel' into pixman
make pixman appear lowercase in configure to match other libs style
X: fix potential crash
vid: clean up remapper initialization
vid: dont call remap functions via object
vid: started to separate src and dst offsets in remapper
vid: disable asm-optimized remappers
text renderer: stop abusing remap_obj
vid: more remap api cleanup
vid: more remap api cleanups
vid: yet more cleanups of remapper api
more cleanup to remap api
more remap cleanups
cleanups to text remapper
make remap_obj a pointer
Revert "vid: disable asm-optimized remappers"

This reverts commit cea310d3f823cf24310385d9b41501bb8a056edb.
add some null checks
Revert "X: XResizeWindow needs +1 for sizes [sf bug #547]"

This reverts commit fbc7f4321a0e76aceed2ed1c62cb8ceb38b72835.