use explicit file paths for CMake rather then globing, This is recommended by cmake devs.

globbing vs explicit is discussed here.
http://www.cmake.org/pipermail/cmake/2008-December/025694.html

Practical implications are:
- developers need to keep CMakeLists.txt files up to date.
- Users wont get strange linking errors if they build after a file is added, since CMake detects CMakeLists.txt is modified and automatically reconfigure.

intern/bsp/CMakeLists.txt

@@ -31,6 +31,10 @@ SET(INC
 	../memutil
 )
 
-FILE(GLOB SRC intern/*.cpp)
+SET(SRC
+	intern/BSP_CSGMesh.cpp
+	intern/BSP_MeshPrimitives.cpp
+	intern/CSG_BooleanOps.cpp
+)
 
 BLENDERLIB(bf_intern_bsp "${SRC}" "${INC}")