2. Two two new ReadApplicationRegister.c(), ReadControlRegister.c() API together with its related definitions in BaseLib.h
3. Remove prototype of AsmSwitchStackAndBackingStore() in public BaseLib.h, it is supposed to be a worker function for AsmSwitchStack()
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6757 6f19259b-4bc3-4df7-8a09-765794883524
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