* Added script to generate all android versions and script to create AAR with prefab
* disable-pie so x86 static lib works. Update AAR to fix bug related to soname field in .so files themselves. Integrate android-all.sh into android-aar.sh
* Missed updated android-build.sh in last commit. This adds --disable-pie to the configure flags
* Added message after android-aar compilation explaining aar usage
