Introduced query param 'include_voicemails' for call_log uri.

- by default only call entries (i.e. no voicemails) are returned.
- if include_voicemails is set to true then also include voicemail
  records, but only if the caller has full voicemail permission.
- voicemail record can only be inserted through call_log provider if
  include_voicemails is set.

Change-Id: I98f6778ace64fa752dc0525c5ce4e5eb83b2e689
8 files changed