fix cabac encoding bug -- don't get the correct previous mb qp
EC UT fail bug fix
rename parameters
    add maxnalsize control for gmp wrapper
Merge pull request #1517 from ruil2/cabac_qp

fix cabac encoding bug -- don't get the correct previous mb qp
Merge pull request #1518 from huili2/ec_UT_0_bugfix

EC UT fail bug fix
fix a calculation of fAverageFrameRate
fix bug of parse error return for VCL data
Merge pull request #1522 from sijchen/after_review

[Encoder] fix a calculation of fAverageFrameRate
Merge pull request #1524 from huili2/parse_err_return_bug_fix

fix bug of parse error return for VCL data
Merge pull request #1519 from ruil2/max_nal_size

    add maxnalsize control for gmp wrapper
Merge remote-tracking branch 'upstream/master' into travis.osx