Perform more C warning fixup on all C source files and headers.

winsup/testsuite/winsup.api/ltp/setregid01.c

@@ -123,7 +123,7 @@ extern void cleanup();
 
 
 
-char *TCID="setregid01";	/* Test program identifier.    */
+const char *TCID="setregid01";	/* Test program identifier.    */
 int TST_TOTAL=5;		/* Total number of test cases. */
 extern int Tst_count;		/* Test Case counter for tst_* routines */
 
@@ -166,7 +166,7 @@ main(int ac, char **av)
 	 *  Dont change either real or effective gid
 	 */
 	gid=getgid();
-egid=getegid();
+	egid=getegid();
 
 
 	/* Call setregid(2) */