more locale_t interfaces (string stuff) and header updates

this should be everything except for some functions where the non-_l
version isn't even implemented yet (mainly some non-ISO-C wcs*
functions).

src/locale/nl_langinfo_l.c

@@ -0,0 +1,7 @@
+#include <locale.h>
+#include <langinfo.h>
+
+char *nl_langinfo_l(nl_item item, locale_t l)
+{
+	return nl_langinfo(item);
+}

src/locale/strcasecmp_l.c

@@ -0,0 +1,7 @@
+#include <strings.h>
+#include <ctype.h>
+
+int strcasecmp_l(const char *l, const char *r, locale_t loc)
+{
+	return strcasecmp(l, r);
+}

src/locale/strcoll_l.c

@@ -0,0 +1,7 @@
+#include <string.h>
+#include <locale.h>
+
+int strcoll_l(const char *l, const char *r, locale_t loc)
+{
+	return strcoll(l, r);
+}

src/locale/strerror_l.c

@@ -0,0 +1,7 @@
+#include <string.h>
+#include <locale.h>
+
+char *strerror_l(int err, locale_t l)
+{
+	return strerror(err);
+}

src/locale/strftime_l.c

@@ -0,0 +1,7 @@
+#include <locale.h>
+#include <time.h>
+
+size_t strftime_l(char *s, size_t n, const char *f, const struct tm *tm, locale_t l)
+{
+	return strftime(s, n, f, tm);
+}

src/locale/strncasecmp_l.c

@@ -0,0 +1,7 @@
+#include <strings.h>
+#include <locale.h>
+
+int strncasecmp_l(const char *l, const char *r, size_t n, locale_t loc)
+{
+	return strncasecmp(l, r, n);
+}

src/locale/strxfrm_l.c

@@ -0,0 +1,6 @@
+#include <string.h>
+
+size_t strxfrm_l(char *dest, const char *src, size_t n, locale_t l)
+{
+	return strxfrm(dest, src, n);
+}