Minor bug fix.

protogeni/lib/GeniStd.pm.in

@@ -49,6 +49,7 @@ use URI;
 use Data::Dumper;
 use Carp qw(cluck carp);
 use POSIX qw(strftime);
+use Date::Parse;
 
 # Filter out any credentials of an uknown type leaving only geni_sfa
 # version 2 and version 3 credentials in a list. Also invokes