made Lua run on the CPU thread to fix unreliable script execution issues
several fixes so the Lua savestate functions can actually work
added Lua function savestate.verify to help with catching desyncs
implemented FailVerifyAtFrameBoundary in Lua interface
added a Clear button to the LuaWindow
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5382 8ced0084-cf51-0410-be5f-012b33b47a6e