ContactsContract api changes

Make the following fields in ContactsContract public API:
STREQUENT_PHONE_ONLY
REMOVE_DUPLICATE_ENTRIES
CommonDataKinds.Callable.CONTENT_FILTER_URI
CommonDataKinds.Callable.CONTENT_URI
ContactOptionsColumns.FULL_NAME_STYLE
ContactOptionsColumns.PINNED
Contacts.MULTI_VCARD_URI (and improve documentation)
PhoneLookup.QUERY_PARAMETER_SIP_ADDRESS (and improve documentation)
Preferences.SORT_ORDER_PRIMARY
Preferences.SORT_ORDER_ALTERNATIVE
Preferences.SORT_ORDER
Preferences.DISPLAY_ORDER_PRIMARY
Preferences.DISPLAY_ORDER_ALTERNATIVE
Preferences.DISPLAY_ORDER
PinnedPositions.DEMOTED
PinnedPositions.STAR_WHEN_PINNING
PinnedPositions.UNDEMOTE
PinnedPositions.UNPINNED
PinnedPositions.UPDATE_URI

Change-Id: I1d70654b4a931b88fff7a3a4b5ffc364978c7406