Modify 'aapt dump badging' to output <meta-data> tags

This enables output of <meta-data> tags within the <application>
element of the AndroidManifest.xml if the --include-meta-data
command line option is invoked.  For example, by

  aapt dump --include-meta-data badging Foo.apk

Bug: 10257318
Change-Id: I88da1a14ab21146b64ac947e0eeb1107816acd4d
3 files changed