Introduce locale-independent character type and string functions.

* include/mailutils/cctype.h: New file.
* include/mailutils/cstr.h: New file.
* include/mailutils/Makefile.am: Add new files.
* mailbox/cstrcasecmp.c: New file.
* mailbox/cstrlower.c: New file.
* mailbox/cstrupper.c: New file.
* mailbox/muctype.c: New file.
* mailbox/strltrim.c: New file.
* mailbox/strrtrim.c: New file.
* mailbox/strskip.c: New file.
* mailbox/Makefile.am: Add new files.
* .gitignore: Update

* gnulib.modules: Remove strcase.

* comsat/comsat.h, imap4d/imap4d.h, include/mailutils/mailutils.h,
include/mailutils/mutil.h, include/mailutils/sys/pop3.h,
libmu_scm/mu_scm.h, mail/mail.h: Include cstr.h and cctype.h.

* comsat/oldcfg.c, config/mailutils-config.c,
examples/mimetest.c, examples/mta.c, examples/nntpclient.c,
examples/pop3client.c, imap4d/append.c, imap4d/create.c,
imap4d/delete.c, imap4d/fetch.c, imap4d/id.c,
imap4d/idle.c, imap4d/list.c, imap4d/namespace.c,
imap4d/rename.c, imap4d/search.c, imap4d/status.c,
imap4d/store.c, imap4d/uid.c, imap4d/util.c,
libmu_argp/compat.c, libmu_auth/ldap.c,
libmu_auth/sql.c, libmu_scm/mu_message.c,
libmu_sieve/actions.c, libmu_sieve/comparator.c,
libmu_sieve/extensions/list.c, libmu_sieve/extensions/spamd.c,
libmu_sieve/extensions/vacation.c, libmu_sieve/load.c,
libmu_sieve/sieve.l, libmu_sieve/tests.c,
libproto/imap/folder.c, libproto/mailer/smtp.c,
libproto/mbox/mbox.c, libproto/mh/folder.c,
libproto/mh/mbox.c, libproto/pop/folder.c,
libproto/pop/mbox.c, libproto/pop/pop3_connect.c,
maidag/forward.c, maidag/lmtp.c, maidag/maidag.c,
maidag/maidag.h, maidag/mailquota.c, mail/alt.c,
mail/copy.c, mail/decode.c, mail/escape.c,
mail/followup.c, mail/mail.c, mail/mailline.c,
mail/msgset.y, mail/print.c, mail/reply.c,
mail/send.c, mail/shell.c, mail/util.c,
mail/write.c, mailbox/address.c,
mailbox/amd.c, mailbox/assoc.c,
mailbox/attachment.c, mailbox/attribute.c,
mailbox/cfg_lexer.l, mailbox/date.c,
mailbox/filter.c, mailbox/gdebug.c,
mailbox/header.c, mailbox/kwd.c,
mailbox/locale.c, mailbox/mailcap.c,
mailbox/mailer.c, mailbox/message.c,
mailbox/message_stream.c, mailbox/mime.c,
mailbox/msrv.c, mailbox/mutil.c,
mailbox/parse822.c, mailbox/progmailer.c,
mailbox/rfc2047.c, mailbox/syslog.c, mailbox/url.c,
mailbox/version.c, mh/mh.h, mh/mh_alias.l,
mh/mh_ctx.c, mh/mh_fmtgram.y, mh/mh_init.c,
mh/mh_list.c, mh/mh_msgset.c, mh/mh_sequence.c,
mh/mh_whatnow.c, mh/mh_whom.c, mh/mhn.c,
mh/mhparam.c, mh/pick.y, mh/sortm.c,
mimeview/mimetypes.y, pop3d/bulletin.c,
pop3d/expire.c, pop3d/pop3d.c, pop3d/pop3d.h,
pop3d/popauth.c, pop3d/user.c, readmsg/msglist.c,
readmsg/readmsg.c, readmsg/readmsg.h, sql/mysql.c,
sql/postgres.c: Use locale-independent cclass and str functions.

130 files changed, 1175 insertions, 600 deletions

diff --git a/.gitignore b/.gitignore
index 24a720260..6f6016283 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,10 @@
 *.a
+*.cflow
 *.la
 *.lo
 *.o
 *.so
 *~
-*.cflow
 .bootstrap
 .deps
 .emacs*
diff --git a/comsat/comsat.h b/comsat/comsat.h
index 38e97ca4c..5d6d3201e 100644
--- a/comsat/comsat.h
+++ b/comsat/comsat.h
@@ -1,6 +1,6 @@
 /* GNU Mailutils -- a suite of utilities for electronic mail
    Copyright (C) 1999, 2000, 2001, 2002, 2007, 
-   2008 Free Software Foundation, Inc.
+   2008, 2009 Free Software Foundation, Inc.
 
    GNU Mailutils is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -37,7 +37,6 @@
 #include <syslog.h>
 #include <string.h>
 #include <pwd.h>
-#include <ctype.h>
 
 #ifdef HAVE_PATHS_H
 # include <paths.h>
@@ -63,6 +62,7 @@
 #include <mailutils/daemon.h>
 #include <mailutils/acl.h>
 #include <mailutils/server.h>
+#include <mailutils/cctype.h>
 
 #ifndef INADDR_NONE
 # define INADDR_NONE -1
diff --git a/comsat/oldcfg.c b/comsat/oldcfg.c
index cea0b7472..b4f235f0a 100644
--- a/comsat/oldcfg.c
+++ b/comsat/oldcfg.c
@@ -1,5 +1,6 @@
 /* This file is part of GNU Mailutils.
-   Copyright (C) 1998, 2001, 2002, 2005, 2007 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2001, 2002, 2005, 2007, 
+   2009 Free Software Foundation, Inc.
 
    GNU Mailutils is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -70,7 +71,7 @@ convert_config (const char *config_file, FILE *outfile)
       if (len > 0 && ptr[len-1] == '\n')
 	ptr[--len] = 0;
 
-      while (*ptr && isspace (*ptr))
+      while (*ptr && mu_isblank (*ptr))
 	ptr++;
       if (!*ptr || *ptr == '#')
 	{
diff --git a/config/mailutils-config.c b/config/mailutils-config.c
index 11335f19a..99689b963 100644
--- a/config/mailutils-config.c
+++ b/config/mailutils-config.c
@@ -242,7 +242,7 @@ main (int argc, char **argv)
 		  struct lib_descr *p;
 		  
 		  for (p = lib_descr; p->name; p++)
-		    if (strcasecmp (p->name, argv[0]) == 0)
+		    if (mu_c_strcasecmp (p->name, argv[0]) == 0)
 		      break;
 
 		  if (p->name)
diff --git a/examples/mimetest.c b/examples/mimetest.c
index ef12a40da..488bb3194 100644
--- a/