correct enc console help info
Add function define and init for SCC hash function
Merge pull request #1272 from zhilwang/x86_hash_scc

Add function define and init for SCC hash function
enable api test for decoder VclNal
Merge pull request #1274 from huili2/test_VclNal

enable api test for decoder VclNal
Merge pull request #1269 from huili2/enc_console_help

correct enc console help info
Merge remote-tracking branch 'upstream/master' into travis.osx