build core/jni with fstrict

Change-Id: Ic2418b7b9a359a47ff8efc501c69b926c3c91c5a

Conflicts:
	core/jni/Android.mk
improve rotation handling

this commit was rewritten/inspired by one made to our jb 4.1 branch by sonicxml.

cheers buddy!

Change-Id: Ib3b46aa54e7bf6602f8c0557ed770624063af529