fix defect7654 that  the encoder won't generate IDR when temporal layer setting changes
add IDR processing in gmp wrapper
Print an intX_t by casting to int64_t

The internal intX_t is either int32_t or int64_t depending on
platform bitness. Since there is no existing printf format for
such an integer, cast it to an int64_t and use the right
printf format for that instead.

This avoids warnings when building with clang.
Remove an unused variable

This fixes build warnings when building for OS X with clang.
Merge pull request #1009 from mstorsjo/remove-unused-var

Remove an unused variable
Merge pull request #1010 from mstorsjo/fix-log-format

Print an intX_t by casting to int64_t
Add the external directory gmp-api to gitignore
remove redundant code
format update
Merge pull request #1007 from ruil2/gmp_idr

add IDR processing in gmp wrapper
add iSubSeqId calculation
Merge pull request #1011 from mstorsjo/ignore-gmp

Add the external directory gmp-api to gitignore
format update
Merge pull request #1013 from ruil2/command_db

add iSubSeqId calculation
Merge pull request #1006 from ruil2/bug_fix

    fix defect7654 that  the encoder won't generate IDR when temporal layer setting changes
Merge remote-tracking branch 'upstream/master' into travis.osx