Merge pull request #1406 from mstorsjo/fix-warnings

Fix compiler warnings about comparison between signed and unsigned

Fix bugs WelsDeblockingFilterSlice UT when random value is 0
Merge pull request #1408 from HaiboZhu/Add_UT_Deblocking

Fix bugs WelsDeblockingFilterSlice UT when random value is 0
Update RELEASES

Removed links to iOS binaries.
Merge pull request #1410 from dabenham/master

Update RELEASES
Wc++11-compat-reserved-user-defined-literal
Wc++11-extensions
Wc++11-extra-semi
Wextra-semi
Wheader-hygiene
Wnewline-eof
Wtautological-undefined-compare
Memory allocated by 'new[]' should be deallocated by 'delete[]', not 'delete'
Removed accidentally committed vim swapfile
ec disable bug fix
improve the logic of locking in the function
Add picture bIsComplete flag to reflect the status of decoder
Modify the output error status and add some some judgement
Merge pull request #1414 from HaiboZhu/LTR_EC

Add picture bIsComplete flag to reflect the status of decoder
Merge pull request #1412 from daniel-j-h/clang_cleanup

Clang's -Weverything and Static Analyzer's reports
modify trace level and fix potential issues
Merge pull request #1416 from ruil2/fix

modify trace level and fix potential issues