1. In WelsInitSps function, if kuiIntraPeriod is huge, uiLog2MaxFrameNum might be bigger than 15, which may introduce illegal H264 bitstream.
2. if pSvcParm.uiIntraPeriod is not zero (e.g. 14) at the initial, it will init sps.iLog2MaxPocLsb. to 5.
But if I changed pSvcParm.uiIntraPeriod to 40, sps.iLog2MaxPocLsb. is still 5, need to recalcuted this parameter.
(Same with uiLog2MaxFrameNum.)
Previously this did a full make, including all of gtest and the unit
test suite. This was done before every build, even for the binary
comparison tests which doesn't use the unit test.
This reduces the runtime of run_PrepareAllTestData.sh from 52 to 10
seconds in one setup.
