Add pthread_mutexattr_get/set_protocol and non-standard sem_get/set_protocol.  These may use to enable or disable priority inheritance on a single semaphore.

Merged in david_s5/nuttx-9/david_s5/i-think-that-size-is-highest-address1-b-1478039243625 (pull request #163)

I think, that Size is (highest address+1 - Base address)

Base address has been removed and if address+count >= size we are outside of the Flash

Review of last PR: Fix return value (ERROR is not a value return value in this context).  Fix some spacing.

To write the last page

Misoc: Logic on common directory should not include ANY lm32 specific header file.  The generic header file chip.h can be exported by all architectures and that is what should be included instead of lm32.h which is an inappropriate dependency.

Xtensa: Adapt co-processor state save/restore functions so that they are call-able from C with Windows ABI.