setitimer syscall

src/library_syscall.js

@@ -690,6 +690,9 @@ mergeInto(LibraryManager.library, {
         case 97: { // setpriority
           return -ERRNO_CODES.EPERM;
         }
+        case 104: { // setitimer
+          return -ERRNO_CODES.ENOSYS; // unsupported feature
+        }
         case 118: { // fsync
           var stream = getStreamFromFD();
           return 0; // we can't do anything synchronously; the in-memory FS is already synced to