Add a new native-lua implementation.
Add initial standard library, and port shellmaps.
Update lua docs when packaging a new build.
Package Lua 5.1.5 for all platforms.
Replace OSX SDL with i386-only non-framework build.

Compiled using ./configure CFLAGS="-m32 -mmacosx-version-min=10.5" LDFLAGS="-m32 -mmacosx-version-min=10.5" --without-x
Include platform-specific dependencies under osx/linux.
move windows-specific deps to thirdparty/windows.
Fix deb dependencies.