Use std thread alongside pthread, still works, just a try for now, need deeper
investigation but seems like they just use pthread under the hood.
gsdx: debug compilation fix

I'm not sure gcc behavior is correct here!
git ignore: linux profiled data
debian: only support SSE2 for the default build
gsdx-ogl: disable ARB_bindless_texture

I have a crash when I try to delete some texture (for example when the simulator is paused)
+Remove semaphore altogether(they are useless for linux code), it should break current windows I think.
But since windows should use the same threads now anyway...
+Solve a little bug at exit, should check is threads ars joinable before joining them