Fixed segfault in pidof when the -f (format) flag is used with

crafted format strings.
Avoid printing stack memory when special format string is passed
to -f.
Listed control characters for -f flag in manual page.

doc/Changelog

@@ -4,6 +4,11 @@ sysvinit (2.95) unreleased; urgency=low
 
     * Fixed various typos and control codes in manual pages.
       Patch provided by Bjarni Ingi Gislason.
+    * Patched pidof so that the -f flag does not print memory information
+      from the stack when passed a specially crafted format string.
+      Also prevent segfault when "%s" is used in a format string.
+      Special characters for the format string can be found in the man
+      page for pidof.
 
 
 sysvinit (2.94) released; urgency=low