. split up lib.h/.cpp, include the remnants from PCH, remove (pretty much universal) include of it.

. timer, config: fix definition of ALLOW_RDTSC
. add movsx_be64 (for whirlpool), revise implementation, move to
byte_order, add test
. MAX -> std::max, remove those macros
. add timestamp to system_info as requested by philip

This was SVN commit r5050.

source/lib/input.cpp

@@ -15,7 +15,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-#include "lib.h"
 #include "lib/external_libraries/sdl.h"
 #include "lib/res/file/file.h"