maint: remove gl/lib/reg*.c.diff; no longer needed

* gl/lib/regcomp.c.diff: Remove file, now that gnulib's
regcomp.c compiles regex.c with -Wno-unused-parameter.
* gl/lib/regex_internal.h.diff: Likewise.
* gl/lib/regex_internal.c.diff: This file induced a change to ensure
that the "Idx" type was unsigned and to remove a few "VAR < 0"
comparisons.  These days, it is probably fine to stay in sync with
gnulib/glibc's copies
of these files, so remove these patches, too.
* gl/lib/regexec.c.diff: Likewise.
Prompted by a report by Assaf Gordon and a suggestion from Paul Eggert.

1 files changed, 0 insertions, 45 deletions

diff --git a/gl/lib/regexec.c.diff b/gl/lib/regexec.c.diff
deleted file mode 100644
index 1aa3c2477..000000000
--- a/gl/lib/regexec.c.diff
+++ /dev/null
@@ -1,45 +0,0 @@
-diff --git a/lib/regexec.c b/lib/regexec.c
-index d3920c4..a8152b5 100644
---- a/lib/regexec.c
-+++ b/lib/regexec.c
-@@ -17,6 +17,8 @@
-    License along with the GNU C Library; if not, see
-    <http://www.gnu.org/licenses/>.  */
-
-+#include "verify.h"
-+#include "intprops.h"
- static reg_errcode_t match_ctx_init (re_match_context_t *cache, int eflags,
- 				     Idx n) internal_function;
- static void match_ctx_clean (re_match_context_t *mctx) internal_function;
-@@ -373,8 +375,11 @@ re_search_2_stub (struct re_pattern_buffer *bufp,
-   Idx len = length1 + length2;
-   char *s = NULL;
-
--  if (BE (length1 < 0 || length2 < 0 || stop < 0 || len < length1, 0))
--    return -2;
-+  verify (! TYPE_SIGNED (Idx));
-+  if (BE (len < length1, 0))
-+     return -2;
-+  /* if (BE (length1 < 0 || length2 < 0 || stop < 0, 0))
-+     return -2; */
-
-   /* Concatenate the strings.  */
-   if (length2 > 0)
-@@ -423,11 +428,14 @@ re_search_stub (struct re_pattern_buffer *bufp,
-   Idx last_start = start + range;
-
-   /* Check for out-of-range.  */
--  if (BE (start < 0 || start > length, 0))
--    return -1;
-+  verify (! TYPE_SIGNED (Idx));
-+  /* if (BE (start < 0, 0))
-+     return -1; */
-+  if (BE (start > length, 0))
-+     return -1;
-   if (BE (length < last_start || (0 <= range && last_start < start), 0))
-     last_start = length;
--  else if (BE (last_start < 0 || (range < 0 && start <= last_start), 0))
-+  else if (BE (/* last_start < 0 || */ (range < 0 && start <= last_start), 0))
-     last_start = 0;
-
-   lock_lock (dfa->lock);