tests/test_issetugid: Added for issetugid(2).
tests/test_issetugid: Added for issetugid(2).

SumiTomohiko/fsyscall2,SumiTomohiko/fsyscall2,SumiTomohiko/fsyscall2,SumiTomohiko/fsyscall2,SumiTomohiko/fsyscall2