fix semantically incorrect use of LC_GLOBAL_LOCALE

LC_GLOBAL_LOCALE refers to the global locale, controlled by setlocale,
not the thread-local locale in effect which these functions should be
using. neither LC_GLOBAL_LOCALE nor 0 has an argument to the *_l
functions has behavior defined by the standard, but 0 is a more
logical choice for requesting the callee to lookup the current locale.
in the future I may move the current locale lookup the the caller (the
non-_l-suffixed wrapper).

at this point, all of the locale logic is dummied out, so no harm was
done, but it should at least avoid misleading usage.

src/locale/langinfo.c

@@ -60,7 +60,7 @@ char *__nl_langinfo_l(nl_item item, locale_t loc)
 
 char *__nl_langinfo(nl_item item)
 {
-	return __nl_langinfo_l(item, LC_GLOBAL_LOCALE);
+	return __nl_langinfo_l(item, 0);
 }
 
 weak_alias(__nl_langinfo, nl_langinfo);

src/locale/strcoll.c

@@ -9,7 +9,7 @@ int __strcoll_l(const char *l, const char *r, locale_t loc)
 
 int strcoll(const char *l, const char *r)
 {
-	return __strcoll_l(l, r, LC_GLOBAL_LOCALE);
+	return __strcoll_l(l, r, 0);
 }
 
 weak_alias(__strcoll_l, strcoll_l);

src/locale/strxfrm.c

@@ -12,7 +12,7 @@ size_t __strxfrm_l(char *restrict dest, const char *restrict src, size_t n, loca
 
 size_t strxfrm(char *restrict dest, const char *restrict src, size_t n)
 {
-	return __strxfrm_l(dest, src, n, LC_GLOBAL_LOCALE);
+	return __strxfrm_l(dest, src, n, 0);
 }
 
 weak_alias(__strxfrm_l, strxfrm_l);

src/locale/wcscoll.c

@@ -10,7 +10,7 @@ int __wcscoll_l(const wchar_t *l, const wchar_t *r, locale_t locale)
 
 int wcscoll(const wchar_t *l, const wchar_t *r)
 {
-	return __wcscoll_l(l, r, LC_GLOBAL_LOCALE);
+	return __wcscoll_l(l, r, 0);
 }
 
 weak_alias(__wcscoll_l, wcscoll_l);

src/locale/wcsxfrm.c

@@ -15,7 +15,7 @@ size_t __wcsxfrm_l(wchar_t *restrict dest, const wchar_t *restrict src, size_t n
 
 size_t wcsxfrm(wchar_t *restrict dest, const wchar_t *restrict src, size_t n)
 {
-	return __wcsxfrm_l(dest, src, n, LC_GLOBAL_LOCALE);
+	return __wcsxfrm_l(dest, src, n, 0);
 }
 
 weak_alias(__wcsxfrm_l, wcsxfrm_l);

src/time/strftime.c

@@ -214,7 +214,7 @@ recu_strftime:
 
 size_t strftime(char *restrict s, size_t n, const char *restrict f, const struct tm *restrict tm)
 {
-	return __strftime_l(s, n, f, tm, LC_GLOBAL_LOCALE);
+	return __strftime_l(s, n, f, tm, 0);
 }
 
 weak_alias(__strftime_l, strftime_l);

src/time/wcsftime.c

@@ -34,5 +34,5 @@ size_t __wcsftime_l(wchar_t *restrict wcs, size_t n, const wchar_t *restrict f,
 
 size_t wcsftime(wchar_t *restrict wcs, size_t n, const wchar_t *restrict f, const struct tm *restrict tm)
 {
-	return __wcsftime_l(wcs, n, f, tm, LC_GLOBAL_LOCALE);
+	return __wcsftime_l(wcs, n, f, tm, 0);
 }