zcache/zram: add support for ARM, MIPS, SUPERH
Fixes Compilation of zram/zcache
zram: add Google Snappy V5 compression
zram: fix kunmap_atomic_deprecated is deprecated warning
zram: rewrite zram to make it compatible with zsmalloc
lib/lzo: Update LZO compression
lib/lzo: Rename lzo1x_decompress.c to lzo1x_decompress_safe.c
lib/lzo: Update LZO compression to current upstream version
lib/lzo: Optimize code for CPUs with inefficient unaligned access