- WITH_CXX_GUARDEDALLOC working again

- CMake building without python or fluidsim working again (broke in recent commit)
- remove BLI_short_filename(), it wasnt used anywhere.

intern/string/STR_String.h

@@ -202,8 +202,8 @@ protected:
 
 #ifdef WITH_CXX_GUARDEDALLOC
 public:
-	void *operator new( unsigned int num_bytes) { return MEM_mallocN(num_bytes, "CXX:STR_String"); }
-	void operator delete( void *mem ) { MEM_freeN(mem); }
+	void *operator new(size_t num_bytes) { return MEM_mallocN(num_bytes, "CXX:STR_String"); }
+	void operator delete(void *mem) { MEM_freeN(mem); }
 #endif
 };