Fix Win32 build globally

VS2015 compiles with this commit
Fix Win32 build for VS2010

SuperGameHerm compiles in Visual Studio 2010's C compiler with this
commit.
Fix Windows performance issues, closing #4

PeekMessage is now throttled to once every 10ms; there's no way users
can possibly press keys with finer resolution and it brings cycle count
to 12463999.002 (2.972x GB, 1.486x GBC) with full debug and no
optimisation.
Merge branch 'master' of https://github.com/awilfox/supergameherm