In crunchgen(1), when calling make(1), don't redirect stderr to stdout,

just rely on the exit status to detect an error.  This makes crunchgen(1)
safe to use with certain make(1) debugging flags.

MFC after:	1 week

Makefile.inc1

@@ -780,7 +780,7 @@ _yacc=		usr.bin/yacc
 .endif
 
 .if !defined(NO_RESCUE) && \
-    ${BOOTSTRAPPING} < 502128
+    ${BOOTSTRAPPING} < 600008
 _crunchgen=	usr.sbin/crunch/crunchgen
 .endif
 

usr.sbin/crunch/crunchgen/crunchgen.c

@@ -700,7 +700,7 @@ void fillin_program_objs(prog_t *p, char *path)
 
 	fclose(f);
 
-	snprintf(line, MAXLINELEN, "cd %s && make -f %s crunchgen_objs 2>&1",
+	snprintf(line, MAXLINELEN, "cd %s && make -f %s crunchgen_objs",
 	    p->srcdir, tempfname);
 	if ((f = popen(line, "r")) == NULL) {
 		warn("submake pipe");