* 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/regex/regcomp.c

@@ -55,9 +55,7 @@ __FBSDID("$FreeBSD: src/lib/libc/regex/regcomp.c,v 1.36 2007/06/11 03:05:54 delp
 #include <wchar.h>
 #include <wctype.h>
 
-#ifndef __CYGWIN__
 #include "collate.h"
-#endif
 
 #include "utils.h"
 #include "regex2.h"
@@ -771,17 +769,6 @@ p_bracket(struct parse *p)
 		EMIT(OANYOF, (int)(cs - p->g->sets));
 }
 
-#ifdef __CYGWIN__
-/* This function is usually part of FreeBSD's libc. */
-int
-__collate_range_cmp(int c1, int c2)
-{
-  char s1[2] = { c1, '\0' };
-  char s2[2] = { c2, '\0' };
-  return strcoll (s1, s2);
-}
-#endif
-
 /*
  - p_b_term - parse one term of a bracketed character list
  == static void p_b_term(struct parse *p, cset *cs);