config: Update/fix android versions

Add kitkat and lollipop and fix the jellybean API level (must have been
a copy-paste error)
config/android: Use proper toolchain version for gnustl

We need to make sure we pick the proper gnustl .so/.a libraries when
building on android. We were previously blindly taking the 4.6 version
which would cause missing/wrong symbols when used with a non-4.6 build.
orc: Update to 0.4.23
osx/ios: Also copy over headers that are directly in prefix/include

Not having them in the final package might not be ideal.
android: Update to NDK r10d