Experimental Java-version of the sdk launcher.

The goal is to have this in $SDK/tools/lib/sdklauncher.jar
with 2 $SDK/SDK Manager|AVD Manager.exe wrappers (built using
jsmooth) that will run the launcher.jar, which in turns can
run/restart the SDK manager itself or the AVD manager.

The original launcher is still available by doing
  $ USE_MINGW=1 make sdklauncher
whereas the new experimenal one is available by doing
  $ make sdklauncher_exp

Change-Id: Iddb6c59b334a6197865f798b3d12fcf70880a141
8 files changed