Torch: AST translations

Change-Id: I0c8884df794f7f9ae8201f53853db1048d1118be
Initial translation import

Change-Id: I79494e1bdb2e77d3f4f27ad47eb7208c17cc6fe6
Merge remote-tracking branch 'refs/remotes/cm11/cm-11.0' into kk-4.4