Create makefile for video engine

Description:
This build.xml will enable video engine build on android by ant. As we discussed before,
in order to make video engine build based on current webrtc file structure which is not
normal, I created this customized build.xml which is based on build.xml in android SDK.

BUG=
TEST=
Review URL: https://webrtc-codereview.appspot.com/571008

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2219 4adac7df-926f-26a2-2b94-8c16560cd09d
4 files changed