add time zone to events for editing, fixes recurrance on wrong days

docs/changelog/7.x.x.txt

@@ -9,6 +9,7 @@
  - fix: Anonymous user creation doesn't use default values for yes/no fields
  - changed hover help to use YUI tooltips, fixes positioning issues
  - remove duplicate header section in calendar event template
+ - events now have a time zone.  fixes recurring events being generated on the wrong day.
 
 7.4.7
  - fix: misspelled i18n in webgui password recovery

docs/upgrades/upgrade_7.4.7-7.4.8.pl

@@ -21,6 +21,7 @@ my $quiet; # this line required
 my $session = start(); # this line required
 
 # upgrade functions go here
+addEventTimeZone($session);
 
 finish($session); # this line required
 
@@ -32,6 +33,12 @@ finish($session); # this line required
 #	# and here's our code
 #}
 
+#-------------------------------------------------
+sub addEventTimeZone {
+	my $session = shift;
+    $session->db->write("alter table Event add column timeZone varchar(255) binary default 'UTC'");
+}
+
 
 
 # ---- DO NOT EDIT BELOW THIS LINE ----