Remove use of the private sun.security.* classes for generating pkcs7
signatures and use bouncy castle instead.
Change-Id: Ie8213575461975085d119e000e764d2a28c26715
(Actually there was a tapas command that just called choosecombo).
The new better tapas command is for building unbundled apps. Run
it with one or more modules to build and optionally a build variant.
tapas [variant] App1 App2 ...
If you don't supply a build variant, it defaults to eng.
Change-Id: I02214abd0b5ad02e364fcb024e10cf6ad17a9e68
Doug Zongker