stagefright: don't fail MediaCodec.configure if clients use store-meta key am:...

stagefright: don't fail MediaCodec.configure if clients use store-meta key am: afb20c31 am: d9f6b221 am: 1c44a2ed am: efe63962 am: 6616cf9e am: 998d7dc3  -s ours am: 3fbd0b0b am: 6b049098 am: 70ef967e am: 2bc2b371 am: e8ccfae5 am: 364c0c37 am: 9dfbcea2 am: e1b40c00
am: 13c04bc1

Change-Id: I967b0298ad4ca0534aa47a6c01cec591400d70e2