tree eaa46daa60ef7f930b9820fe1fc9969266993d67
parent 199ee3943eb07c75d7f6ae3dd189f20215c81b8f
author Ying Wang <wangying@google.com> 1433295899 -0700
committer Ying Wang <wangying@google.com> 1433355253 -0700

Allow to specify the output Android.mk file path.

- Allow to specify the output Android.mk file path.
  We need this to generate Android.mk into the out diretory.
- Makefile strings don't need quotes.
- Return non-zero exit code if it fails.
- Other trivial format changes.

Change-Id: I460083f6e0a2707cd4a6fe0bef3f8ae7562e9edb