arm: Allow CPU-supported unaligned accesses

Thanks to DerTeufel for the idea

Change-Id: Ie832fa9227314f0c6e528c1495b26abc64425b9f

Conflicts:

	Makefile
LOAD_FREQ (4*HZ+61) avoids loadavg Moire

http://ripke.com/loadavg/moire

Change-Id: I8e736bbecb804c63ae745cb802162deb6031e33d
Improve memcopy/memmove

Thanks to DerTeufel!

Change-Id: Ie549325afdb82a9ba265c6804e72778cf6bb51de