* Makefile.in (clean): Remove non-existant regexp dir.

* collate.h: New header.
	(__collate_range_cmp): Declare.
	(__collate_load_error): Define.
	* glob.cc: Pull in latest version from FreeBSD.  Simplify and reduce
	Cygwin-specific changes.
	* regex/regcomp.c: Include collate.h on Cygwin as well.
	(__collate_range_cmp): Move from here...
	* nlsfuncs.cc (__collate_range_cmp): ...to here.

	* miscfuncs.cc (thread_wrapper): Fix typo in comment.
	(CygwinCreateThread): Take dead zone of Windows stack into account.
	Change the way how the stack is commited and how to handle guardpages.
	Explain how and why.
	* thread.h (PTHREAD_DEFAULT_STACKSIZE): Change definition.  Explain why.

winsup/cygwin/nlsfuncs.cc

@@ -1192,6 +1192,15 @@ strcoll (const char *s1, const char *s2)
   return ret - CSTR_EQUAL;
 }
 
+/* BSD.  Used in glob.cc and regcomp.c, for instance. */
+extern "C" int
+__collate_range_cmp (int c1, int c2)
+{
+  char s1[2] = { c1, '\0' };
+  char s2[2] = { c2, '\0' };
+  return strcoll (s1, s2);
+}
+
 extern "C" size_t
 wcsxfrm (wchar_t *ws1, const wchar_t *ws2, size_t wsn)
 {