increase -Werror resilience

for bin/, commands/, libexec/, sbin/, test/, usr.bin/ and usr.sbin/.

Change-Id: I8fa12c3cd86865311cef71b7faa7cf4fa785174f

bin/mkdir/Makefile

@@ -3,6 +3,7 @@
 
 PROG=	mkdir
 .ifdef __MINIX
+WARNS=3
 SYMLINKS=	$(BINDIR)/$(PROG) /usr/bin/$(PROG)
 .endif
 

bin/pax/Makefile

@@ -3,6 +3,10 @@
 
 .include <bsd.own.mk>
 
+.if defined(__MINIX)
+WARNS=3
+.endif
+
 PROG=   pax
 SRCS=	ar_io.c ar_subs.c buf_subs.c file_subs.c ftree.c\
 	gen_subs.c getoldopt.c options.c pat_rep.c pax.c sel_subs.c tables.c\

bin/pax/ar_io.c

@@ -456,8 +456,13 @@ ar_close(void)
 
 	/* mimic cpio's block count first */
 	if (frmt && strcmp(NM_CPIO, argv0) == 0) {
+#ifdef __minix
+		(void)fprintf(listf, "%d blocks\n",
+		    (rdcnt ? rdcnt : wrcnt) / 5120);
+#else
 		(void)fprintf(listf, OFFT_F " blocks\n",
 		    (rdcnt ? rdcnt : wrcnt) / 5120);
+#endif
 	}
 
 	ar_summary(0);

bin/pax/file_subs.c

@@ -170,7 +170,6 @@ file_creat(ARCHD *arcn, int write_to_hardlink)
 			 * conservatively - just write Xes into the last component.
 			 * There is space because of the malloc().
 			 */
-			int cc;
 			char *last_slash;
 			strcpy(arcn->tmp_name, arcn->name);
 			if(!(last_slash = strrchr(arcn->tmp_name, '/')))