[newlib-cygwin] Add strerror_l prototype, change str[n]casecmp_l feature tests

[newlib-cygwin] Add strerror_l prototype, change str[n]casecmp_l feature tests

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=448b46397dcea17e97783b0311b6d9af6878001c

commit 448b46397dcea17e97783b0311b6d9af6878001c
Author: Brian Inglis <Brian.Inglis@SystematicSW.ab.ca>
Date:   Wed Aug 24 14:36:31 2016 -0600

    Add strerror_l prototype, change str[n]casecmp_l feature tests
    
    strerror_l prototype was missing.
    str[n]casecmp_l feature tests in string.h vs. strings.h were transposed.

Diff:
---
 newlib/libc/include/string.h  | 13 +++++++------
 newlib/libc/include/strings.h | 12 ++++++++----
 2 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/newlib/libc/include/string.h b/newlib/libc/include/string.h
index 8f4fd2e..ba5e51e 100644
--- a/newlib/libc/include/string.h
+++ b/newlib/libc/include/string.h
@@ -48,13 +48,14 @@ char 	*_EXFUN(strtok,(char *__restrict, const char *__restrict));
 size_t	 _EXFUN(strxfrm,(char *__restrict, const char *__restrict, size_t));
 
 #if __POSIX_VISIBLE >= 200809
-extern int strcasecmp_l (const char *, const char *, locale_t);
-extern int strncasecmp_l (const char *, const char *, size_t, locale_t);
-extern int strcoll_l (const char *, const char *, locale_t);
-extern size_t strxfrm_l (char *__restrict, const char *__restrict, size_t,
-			 locale_t);
+int	 strcoll_l (const char *, const char *, locale_t);
+char	*strerror_l (int, locale_t);
+size_t	 strxfrm_l (char *__restrict, const char *__restrict, size_t, locale_t);
+#endif
+#if __GNU_VISIBLE
+int	 strcasecmp_l (const char *, const char *, locale_t);
+int	 strncasecmp_l (const char *, const char *, size_t, locale_t);
 #endif
-
 #if __MISC_VISIBLE || __POSIX_VISIBLE
 char 	*_EXFUN(strtok_r,(char *__restrict, const char *__restrict, char **__restrict));
 #endif
diff --git a/newlib/libc/include/strings.h b/newlib/libc/include/strings.h
index b462d07..be01958 100644
--- a/newlib/libc/include/strings.h
+++ b/newlib/libc/include/strings.h
@@ -15,6 +15,10 @@
 #include <sys/cdefs.h>
 #include <sys/types.h> /* for size_t */
 
+#if __POSIX_VISIBLE >= 200809
+#include <sys/_locale.h>
+#endif
+
 _BEGIN_STD_C
 
 #if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE < 200809)
@@ -33,10 +37,10 @@ int	 _EXFUN(ffs,(int));
 int	 _EXFUN(strcasecmp,(const char *, const char *));
 int	 _EXFUN(strncasecmp,(const char *, const char *, size_t));
 
-#if __GNU_VISIBLE
-extern int strcasecmp_l (const char *, const char *, locale_t);
-extern int strncasecmp_l (const char *, const char *, size_t, locale_t);
-#endif /* _GNU_VISIBLE */
+#if __POSIX_VISIBLE >= 200809
+int	 strcasecmp_l (const char *, const char *, locale_t);
+int	 strncasecmp_l (const char *, const char *, size_t, locale_t);
+#endif /* __POSIX_VISIBLE >= 200809 */
 
 _END_STD_C