Color: Moved SColor* structs into SColor.h, so they can be used without
indirectly including CVector[34]D.
Terrain: Added 'base colour', for the Actor Viewer to be able to
modulate the colour of normally-white terrain.
Removed some "using namespace std" (because it doesn't make the code
easier to read, and it defeats the point of namespaces, and the rest of
the code doesn't do it).
This was SVN commit r4392.
Premake: Changed to use PCH when compiling tests.
CxxTest: Got rid of /Wp64 warnings. Changed TS_ASSERT_STR_EQUALS to
print both strings on failure.
win_internal: Added the bits that CxxTest::Win32Gui needs (because
Win32Gui is now compiled with PCH and uses our sysdep headers).
Disabled test_cache_policies, because it took long enough for me to read
its name.
This was SVN commit r4237.