SAMV71: Quick'n'dirty port of the SAMA5 SSC driver to the SAM7.  The IP is compatible but there are still some DMA- and Cache-related issues that need to be worked out.

ARMv7-M MPU.  Bad syntax will cause failure to write the correct value to the MPU_RASR register.  From Juha Niskanen

libc: stdio: Fix NULL pointer dereference in ungetc(). If 'stream' was NULL, 'stream->fs_oflags' was evaluated.  From Juha Niskanen

mq_timedsend():  Do check for time errors if the message queue is not full.  Noted by Freddie Chopin