add freely setoption for EC_idc and UT
Merge pull request #1380 from huili2/ec_option_free

add freely setoption for EC_idc and UT
Silence warnings with gcc in GetOptionTid_AVC_NOPREFIX
Merge pull request #1381 from mstorsjo/silence-warnings

Silence warnings with gcc in GetOptionTid_AVC_NOPREFIX
Merge branch 'master' of https://github.com/cisco/openh264 into modi_stra21