Include missing files from xz-embedded-20130513.

These files are part of the xz-embedded latest stable release but were
missing in this repo.

Bug: 27817327
TEST=mmma external/lzma

(cherry picked from commit 593328cc99a5dadb67d12de164dc2667853d3dc9)

Change-Id: I4d15367a56d63aa3a050531cb3303b77ba67f54c
4 files changed