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/utils.c

@@ -293,7 +293,7 @@ date_sec2date_str (long sec, char *datefmt)
   char *datestr = (char *) mem_calloc (BUFSIZ, sizeof (char));
 
   if (sec == 0)
-    (void)snprintf (datestr, BUFSIZ, "0");
+    (void)strncpy (datestr, "0", BUFSIZ);
   else
     {
       lt = localtime ((time_t *)&sec);