support android build
Merge pull request #4 from kmcallister/rust-upgrade

Update to latest Rust
Merge pull request #5 from webconvforge/PRbase

support android build
Switch from -o to --out-dir.
Revert to using -o for tests
Merge pull request #6 from kmcallister/otest

Revert to using -o for tests
Add a including path and a library path after pull libpng in tree
Merge pull request #8 from pliu6/issue-7-squash

Add a including path and a library path after pull libpng in tree
Fix for png -> libpng.
Merge pull request #9 from metajack/in-tree-png

Fix for png -> libpng.
Update for language changes
Merge pull request #10 from brson/master

Update for language changes
Update for new Path API.
Upgrade Rust