doc change: cherry pick 75c66da20927e7e854397c00ef1974140270c57f. (clarify fill_parent/match_parent transition in ViewGroup.LayoutParams and R.attr. Mention match_parent in dev guide "declaring layout" doc.)

Change-Id: I1d2b80b8dc3f8b2e3c1befcbb7c4c522d78a2db8
3 files changed