Reorganized core/ directory, it was too fatty already

-Removed FuncRef, since Callable makes it obsolete
-Removed int_types.h as its obsolete in c++11+
-Changed color names code

core/io/file_access_network.cpp

@@ -30,10 +30,10 @@
 
 #include "file_access_network.h"
 
+#include "core/config/project_settings.h"
 #include "core/io/ip.h"
 #include "core/io/marshalls.h"
 #include "core/os/os.h"
-#include "core/project_settings.h"
 
 //#define DEBUG_PRINT(m_p) print_line(m_p)
 //#define DEBUG_TIME(m_what) printf("MS: %s - %lli\n",m_what,OS::get_singleton()->get_ticks_usec());