Fix INT_MAX and INT_MIN marcos not declared error.

[xuzhaozheng]

When I tried build on MacOS, terminal show several lines like: /Users/username/GitHub/LibAAF/tools/thirdparty/libTC.c:355:22: error: use of undeclared identifier 'INT_MIN' assert( unitRate > INT_MIN && unitRate < INT_MAX ); ^ /Users/username/GitHub/LibAAF/tools/thirdparty/libTC.c:355:44: error: use of undeclared identifier 'INT_MAX' assert( unitRate > INT_MIN && unitRate < INT_MAX );