1.3.1: fix jni lib location in apklibs

add android:apkbuild-pickfirsts for picking first of conflicts in apkbuild
add workaround for builder bug
https://code.google.com/p/android/issues/detail?id=73437
update readme for 1.3.1
0.13 changes
0.13 changes for 0.9.2
0.13 changes for test hello-world-oscarvarto
0.13.5 changes