android/build: -mfloat-abi=soft workaround for exynos 4210 float point bug

for more detail
http://www.spinics.net/lists/arm-kernel/msg368418.html
android/Android.mk: correct reference url
ff_ffplay: fix warnings
android/ijksdl: MediaCodec jni wrapper
ff_ffplay: factorize video decoder flow to FIFO style
android: mediacodec work flow