Added optimized CRC32 algorithm.
add SHA1/AES optimized for ARM

Conflicts:
	arch/arm/Makefile
	drivers/cpufreq/Kconfig
Disabled GENTLE FAIR SLEEPERS for better UI performance
Use glibc for lib/memcopy and lib/string

The glibc version can be in some cases 10 times faster than the kernel version
also, the old perfromance of memcpy and memmove of general version is very inefficient,
using glibc version improves them