nls: add functions which take translations to be used

Add the following three functions to most of the commands.

setlocale (LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);

Reference: http://www.freelists.org/post/procps/backporting,1
Reported-by: Jim Warner <james.warner@comcast.net>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>

watch.c

@@ -309,6 +309,8 @@ int main(int argc, char *argv[])
 	};
 
 	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
 
 	while ((optc =
 		getopt_long(argc, argv, "+bced::hn:pvtx", longopts, (int *)0))