Revert "lib/lzo: Optimize code for CPUs with inefficient unaligned access"

This reverts commit 713597eb3a4d2e13ad1d1b19126a0398f9204fc6.
Revert "lib/lzo: huge LZO decompression speedup on ARM by using unaligned access"

This reverts commit a7e474f740fce47d984154d72a812779e8a24cc7.
Revert "lib/lzo: Update LZO compression to current upstream version"

This reverts commit 548b1085a5083c59023219dc5c17bb578c60de0c.