Initial set of ANSI clean namespace mappings.

lib/libc/include/namespace.h

@@ -0,0 +1,16 @@
+#define catclose	_catclose
+#define catgets		_catgets
+#define catopen		_catopen
+#define err		_err
+#define errx		_errx
+#define strtoq		_strtoq
+#define strtouq		_strtouq
+#define sys_errlist	_sys_errlist
+#define sys_nerr	_sys_nerr
+#define sys_siglist	_sys_siglist
+#define verr		_verr
+#define verrx		_verrx
+#define vwarn		_vwarn
+#define vwarnx		_vwarnx
+#define warn		_warn
+#define warnx		_warnx