Remove old boolean operation module

Carve proved it's a way to go, so the time have came to get rid of old
boolean operation module which isn't used anymore.

Still kept BOP interface but move it to BSP module. At some point it
could be cleaned up further (like perhaps removed extra abstraction
level or so) but would be nice to combine such a refactor with making
BSP aware of NGons.

Tested on linux using both cmake and scons, possible regressions on
windows/osx. Would check windoes build just after commit.

CMakeLists.txt

@@ -226,9 +226,6 @@ option(WITH_LZMA          "Enable best LZMA compression, (used for pointcache)"
 # Camera/motion tracking
 option(WITH_LIBMV         "Enable libmv structure from motion library" ON)
 
-# Mesh boolean lib
-option(WITH_CARVE         "Enable Carve library to handle mesh boolean operations" ON)
-
 # Misc
 option(WITH_INPUT_NDOF "Enable NDOF input devices (SpaceNavigator and friends)" ON)
 option(WITH_RAYOPTIMIZATION	"Enable use of SIMD (SSE) optimizations for the raytracer" ON)
@@ -364,8 +361,8 @@ if(WITH_CYCLES)
 	set(WITH_OPENIMAGEIO ON)
 endif()
 
-# auto enable boost for cycles and carve
-if(WITH_CYCLES OR WITH_CARVE)
+# auto enable boost for cycles and booleans
+if(WITH_CYCLES OR WITH_MOD_BOOLEAN)
 	set(WITH_BOOST ON)
 endif()