Move locale.h functions into their own directory.

libc/Makefile

@@ -256,7 +256,8 @@ libgen/basename.o \
 libgen/dirname.o \
 linkat.o \
 link.o \
-localeconv.o \
+locale/localeconv.o \
+locale/setlocale.o \
 lseek.o \
 lstat.o \
 memstat.o \
@@ -313,7 +314,6 @@ select.o \
 setegid.o \
 seteuid.o \
 setgid.o \
-setlocale.o \
 setpgid.o \
 settermmode.o \
 setuid.o \

libc/locale/localeconv.cpp

@@ -17,7 +17,7 @@
     You should have received a copy of the GNU Lesser General Public License
     along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
 
-    localeconv.cpp
+    locale/localeconv.cpp
     Return locale-specific information.
 
 *******************************************************************************/

libc/locale/setlocale.cpp

@@ -17,7 +17,7 @@
     You should have received a copy of the GNU Lesser General Public License
     along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
 
-    setlocale.cpp
+    locale/setlocale.cpp
     Set program locale.
 
 *******************************************************************************/