scene so that g_scene can be deprecated later.

shitload of warnings Bullet spits at us.

some deprecated stuff.

when building for the PS3 on a Unix system.

nothing for now except ensure that every makefile includes common.am.

on Windows if using Visual Studio; if using MinGW, try to stick to the
original main() entry point.

do not open a console at startup.

functions; also remove a lot of idiotic "using namespace std" from the
codebase.