more syncing with trunk, also cleared many warnings with gcc4.6

source/blender/blenkernel/SConscript

@@ -1,13 +1,8 @@
 #!/usr/bin/python
 Import ('env')
 
-import os
-
 sources = env.Glob('intern/*.c')
 
-# bmesh doesn't use booleanops.c - probably remove
-sources.remove('intern' + os.sep + 'booleanops.c')
-
 incs = '. #/intern/guardedalloc #/intern/memutil ../editors/include'
 incs += ' ../blenlib ../blenfont ../makesdna ../windowmanager'
 incs += ' ../render/extern/include #/intern/decimation/extern ../makesrna'