Merge branch 'cb/skip-utf8-check-with-pcre1'

Make sure the grep machinery does not abort when seeing a payload
that is not UTF-8 even when JIT is not in use with PCRE1.

* cb/skip-utf8-check-with-pcre1:
  grep: skip UTF8 checks explicitly

grep.c

@@ -421,7 +421,7 @@ static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt)
 static int pcre1match(struct grep_pat *p, const char *line, const char *eol,
 		regmatch_t *match, int eflags)
 {
-	int ovector[30], ret, flags = 0;
+	int ovector[30], ret, flags = PCRE_NO_UTF8_CHECK;
 
 	if (eflags & REG_NOTBOL)
 		flags |= PCRE_NOTBOL;

grep.h

@@ -3,6 +3,9 @@
 #include "color.h"
 #ifdef USE_LIBPCRE1
 #include <pcre.h>
+#ifndef PCRE_NO_UTF8_CHECK
+#define PCRE_NO_UTF8_CHECK 0
+#endif
 #ifdef PCRE_CONFIG_JIT
 #if PCRE_MAJOR >= 8 && PCRE_MINOR >= 32
 #ifndef NO_LIBPCRE1_JIT