Add a more flexible queryRecentDocuments

The existing queryRecentDocuments have a hard limit 64. However, case
like ARC++ wishes to have a more flexible limit that can be passed as an
extra parameter. This new API will gracefully degrade to the old API to
maintain backward compatibility with old providers.

Bug: 111288304
Test: manual test (patched the MediaDocumentsProvider, and test calling
the new API):
1. Test that passing Bundle with QUERY_ARG_LIMIT=5 is honored and
returned is limited to 5.
2. Test that passing null will release the limit to default 64.
3. Test that removing MediaProvider implementation for new method and
implement the old method will automatically redirect the call to old
method (backward compatible with old providers).

Change-Id: I37b1785b94f3e9cf09128fbf1e8779a4447fe7a9