decompressor: Add LZ4 decompressor module

Date	Tue, 26 Feb 2013 15:24:27 +0900

This patch adds support for LZ4 decompression in the Linux Kernel.
LZ4 Decompression APIs for kernel are based on LZ4 implementation
by Yann Collet.

LZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html
LZ4 source repository : http://code.google.com/p/lz4/

Signed-off-by: Kyungsik Lee <kyungsik.lee@lge.com>

v2:
- Clean up code
- Enable unaligned access for ARM v6 and above with
  CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
- Add lz4_decompress() for faster decompression with
  uncompressed output size

Signed-off-by: Paul Reioux <reioux@gmail.com>
Enable GRAPHITE and build with memory optimizations
This flags will enable graphite to be built onto the kernel and also allow it to build with memory optimizations.
This only applies to kernels.

Linaro GCC 4.8 Optimizations
This will heavily modify the Makefile to include Optimizations for GCC 4.8.3
This will work also on any 4.8.3 Toolchain

Big thanks to @sparksco <sparksco@gmail.com>

For ROM check https://github.com/AOSPAL

Big thanks to @sparksco Paul Beeler <sparksco@gmail.com>