Use libziparchive for dalvik zip processing.

The API was similar enough that we could just delegate
to existing zip functions. The existing ZipArchiveHandle /
ZipEntry types have been reused instead of defining new
types.

The old ZipArchive type has been removed because it serves
no useful purpose, and no code was using it anyway.

Change-Id: I47f12344d1e6efc234fed50b1613f9f179a9b03f
13 files changed