dumpsys SurfaceFlinger will now always dump SF's state, even if SF is deadlocked

(in this case the state is dumped without the proper locks held which could result to a crash)

in addition, the last transaction and swap times are printed to the dump as well as the time spent
*currently* in these function. For instance, if SF is unresponsive because eglSwapBuffers() is stuck,
this will show up here.