Capture java libs for android-1.6_r1.

Not really minimized implibs - will be rebased later.
capture-javalibs: AOSP names javalibs funkily, capture them all.
Add script to post-initialize build of platform-dependent APK.

update-platform-project script should be run after usual
"android update project" command.
Refactor to class, actually use API target level.
Java implibs in progress also.