Reland: Uprev libmtp to 1.1.12

BUG=chrome-os-partner:47236
TEST=none
TBR=thestig@chromium.org

Original description:

Uprev libmtp to 1.1.12

- Downloaded libmtp 1.1.12 from
  https://sourceforge.net/projects/libmtp/files/libmtp/1.1.12/
- Apply patches in ./patches. Note that some patches have been skipped.
- Moved skipped patches to ./skipped_patches

BUG=chrome-os-partner:47236
TEST=none
R=thestig@chromium.org

Review URL: https://codereview.chromium.org/2345493002 .

(cherry picked from commit 4f0c550b9e148f1760eb6d9a44112940649d885c)

Review URL: https://codereview.chromium.org/2369283002 .
74 files changed