Avoid use of printf()/fprintf()

Use one of the following functions where appropriate:

* puts() (whenever we print hard coded strings to stdout)
* fputs() (whenever we print hard coded strings to a stream)
* putchar() (whenever we print a single character to stdout)
* fputc() (whenever we print a single character to a stream)
* strncpy() (whenever we copy hard coded strings to a buffer)

This removes the overhead introduced by the format string parser and
reduces the number of false positive C-format strings spotted by
xgettext(1)'s heuristics.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

src/args.c

@@ -179,7 +179,7 @@ status_arg (void)
   else if (dpid)
     fprintf (stdout, _("calcurse is running in background (pid %d)\n"), dpid);
   else
-    fprintf (stdout, _("calcurse is not running\n"));
+    puts (_("calcurse is not running\n"));
 }
 
 /*