Replace regex files with multibyte-aware version from FreeBSD.

	* Makefile.in (install-headers): Remove extra command to install
	regex.h.
	(uninstall-headers): Remove extra command to uninstall regex.h.
	* nlsfuncs.cc (collate_lcid): Make externally available to allow
	access to collation internals from regex functions.
	(collate_charset): Ditto.
	* wchar.h: Add __cplusplus guards to make C-clean.
	* include/regex.h: New file, replacing regex/regex.h.  Remove UCB
	advertising clause.
	* regex/COPYRIGHT: Accommodate BSD license.  Remove UCB advertising
	clause.
	* regex/cclass.h: Remove.
	* regex/cname.h: New file from FreeBSD.
	* regex/engine.c: Ditto.
	(NONCHAR): Tweak for Cygwin.
	* regex/engine.ih: Remove.
	* regex/mkh: Remove.
	* regex/regcomp.c: New file from FreeBSD.  Tweak slightly for Cygwin.
	Import required collate internals from nlsfunc.cc.
	(p_ere_exp): Add GNU-specific \< and \> handling for word boundaries.
	(p_simp_re): Ditto.
	(__collate_range_cmp): Define.
	(p_b_term): Use Cygwin-specific collate internals.
	(findmust): Ditto.
	* regex/regcomp.ih: Remove.
	* regex/regerror.c: New file from FreeBSD.  Fix a few compiler warnings.
	* regex/regerror.ih: Remove.
	* regex/regex.7: New file from FreeBSD.  Remove UCB advertising clause.
	* regex/regex.h: Remove.  Replaced by include/regex.h.
	* regex/regexec.c: New file from FreeBSD.  Fix a few compiler warnings.
	* regex/regfree.c: New file from FreeBSD.
	* regex/tests: Remove.
	* regex/utils.h: New file from FreeBSD.

1 files changed, 96 insertions, 60 deletions

diff --git a/winsup/cygwin/regex/cname.h b/winsup/cygwin/regex/cname.h
index 1000f603e..4ad1ea93b 100644
--- a/winsup/cygwin/regex/cname.h
+++ b/winsup/cygwin/regex/cname.h
@@ -1,82 +1,118 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994 Henry Spencer.
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Henry Spencer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)cname.h	8.3 (Berkeley) 3/20/94
+ * $FreeBSD: src/lib/libc/regex/cname.h,v 1.4 2007/01/09 00:28:04 imp Exp $
+ */
+
 /* character-name table */
 static struct cname {
 	const char *name;
 	char code;
 } cnames[] = {
-	{"NUL",	'\0'},
-	{"SOH",	'\001'},
-	{"STX",	'\002'},
-	{"ETX",	'\003'},
-	{"EOT",	'\004'},
-	{"ENQ",	'\005'},
-	{"ACK",	'\006'},
-	{"BEL",	'\007'},
-	{"alert",	'\007'},
-	{"BS",		'\010'},
-	{"backspace",	'\b'},
-	{"HT",		'\011'},
-	{"tab",		'\t'},
-	{"LF",		'\012'},
-	{"newline",	'\n'},
-	{"VT",		'\013'},
+	{"NUL",			'\0'},
+	{"SOH",			'\001'},
+	{"STX",			'\002'},
+	{"ETX",			'\003'},
+	{"EOT",			'\004'},
+	{"ENQ",			'\005'},
+	{"ACK",			'\006'},
+	{"BEL",			'\007'},
+	{"alert",		'\007'},
+	{"BS",			'\010'},
+	{"backspace",		'\b'},
+	{"HT",			'\011'},
+	{"tab",			'\t'},
+	{"LF",			'\012'},
+	{"newline",		'\n'},
+	{"VT",			'\013'},
 	{"vertical-tab",	'\v'},
-	{"FF",		'\014'},
-	{"form-feed",	'\f'},
-	{"CR",		'\015'},
+	{"FF",			'\014'},
+	{"form-feed",		'\f'},
+	{"CR",			'\015'},
 	{"carriage-return",	'\r'},
-	{"SO",	'\016'},
-	{"SI",	'\017'},
-	{"DLE",	'\020'},
-	{"DC1",	'\021'},
-	{"DC2",	'\022'},
-	{"DC3",	'\023'},
-	{"DC4",	'\024'},
-	{"NAK",	'\025'},
-	{"SYN",	'\026'},
-	{"ETB",	'\027'},
-	{"CAN",	'\030'},
-	{"EM",	'\031'},
-	{"SUB",	'\032'},
-	{"ESC",	'\033'},
-	{"IS4",	'\034'},
-	{"FS",	'\034'},
-	{"IS3",	'\035'},
-	{"GS",	'\035'},
-	{"IS2",	'\036'},
-	{"RS",	'\036'},
-	{"IS1",	'\037'},
-	{"US",	'\037'},
+	{"SO",			'\016'},
+	{"SI",			'\017'},
+	{"DLE",			'\020'},
+	{"DC1",			'\021'},
+	{"DC2",			'\022'},
+	{"DC3",			'\023'},
+	{"DC4",			'\024'},
+	{"NAK",			'\025'},
+	{"SYN",			'\026'},
+	{"ETB",			'\027'},
+	{"CAN",			'\030'},
+	{"EM",			'\031'},
+	{"SUB",			'\032'},
+	{"ESC",			'\033'},
+	{"IS4",			'\034'},
+	{"FS",			'\034'},
+	{"IS3",			'\035'},
+	{"GS",			'\035'},
+	{"IS2",			'\036'},
+	{"RS",			'\036'},
+	{"IS1",			'\037'},
+	{"US",			'\037'},
 	{"space",		' '},
 	{"exclamation-mark",	'!'},
 	{"quotation-mark",	'"'},
 	{"number-sign",		'#'},
 	{"dollar-sign",		'$'},
-	{"percent-sign",		'%'},
+	{"percent-sign",	'%'},
 	{"ampersand",		'&'},
 	{"apostrophe",		'\''},
 	{"left-parenthesis",	'('},
 	{"right-parenthesis",	')'},
-	{"asterisk",	'*'},
-	{"plus-sign",	'+'},
-	{"comma",	','},
-	{"hyphen",	'-'},
+	{"asterisk",		'*'},
+	{"plus-sign",		'+'},
+	{"comma",		','},
+	{"hyphen",		'-'},
 	{"hyphen-minus",	'-'},
-	{"period",	'.'},
-	{"full-stop",	'.'},
-	{"slash",	'/'},
-	{"solidus",	'/'},
+	{"period",		'.'},
+	{"full-stop",		'.'},
+	{"slash",		'/'},
+	{"solidus",		'/'},
 	{"zero",		'0'},
-	{"one",		'1'},
-	{"two",		'2'},
-	{"three",	'3'},
+	{"one",			'1'},
+	{"two",			'2'},
+	{"three",		'3'},
 	{"four",		'4'},
 	{"five",		'5'},
-	{"six",		'6'},
-	{"seven",	'7'},
-	{"eight",	'8'},
+	{"six",			'6'},
+	{"seven",      		'7'},
+	{"eight",		'8'},
 	{"nine",		'9'},
-	{"colon",	':'},
-	{"semicolon",	';'},
+	{"colon",		':'},
+	{"semicolon",		';'},
 	{"less-than-sign",	'<'},
 	{"equals-sign",		'='},
 	{"greater-than-sign",	'>'},
@@ -85,12 +121,12 @@ static struct cname {
 	{"left-square-bracket",	'['},
 	{"backslash",		'\\'},
 	{"reverse-solidus",	'\\'},
-	{"right-square-bracket",	']'},
+	{"right-square-bracket",']'},
 	{"circumflex",		'^'},
 	{"circumflex-accent",	'^'},
 	{"underscore",		'_'},
 	{"low-line",		'_'},
-	{"grave-accent",		'`'},
+	{"grave-accent",	'`'},
 	{"left-brace",		'{'},
 	{"left-curly-bracket",	'{'},
 	{"vertical-line",	'|'},