Fixed double PIX_FMT_YUV420P decoding

Sumamry: There were an "else if" issue in code. Resolved
thanks to pablo-navarro from github.

Change-Id: Icc66103519fb95a64b792370e773ba48ccdd539d
Fixed hangs on network read issue

Summary: Player can sometimes hangs on avformat_find_stream_info.
This solution proposed pablo-navarro fix issue.

Change-Id: I47d7c06d92b07ed14efcb788d9b0ea94e2a0e873
Fixed log message

Summary: There were an issue causing in debug message to show
wrong time in logcat.

Change-Id: Ib60125ed9e76424d962deb1118b12edc55b6c675
Added some audio sync improvmenets

Summary: Better audio sync. Removed wrong method MIN_SLEEP_TIME_MS.
It should not be used at all. Now implementation use
MIN_SLEEP_TIME_US. Now we give 100ms to push audio to buffers and
let play.

Change-Id: Id2d724a308b2e149e6f06912429a4a0c0218305b
Merge branch 'master' of https://review.appunite.com/androidffmpeg