tv_grab_uk_rt listings off by one hour since DST change

This issue has been reported before and I'm bitten by it too. I use
tv_grab_uk_rt (0.5.61) next to tv_grab_nl_py on my CentOS 5/MythTV
0.24.1 box in The Netherlands. During CET/GMT the listings are fetched
fine and the one hour difference between NL and UK is correctly
accounted for. However after the change to CEST/BST, the one hour
difference is not corrected. The result is that, for example, a
programme that starts at 19.00 BST ends up in my guide at 19.00 CEST.

Reading through the archives it seems all related to Perl 5.8.8 being
used on CentOS 5. I have Perl Date::Manip 6.14 installed, but
apparently with Perl versions below 5.10 it falls back to using the
5.x Date::Manip routines which have trouble doing proper timezone
calculations. I'm not a programmer myself, but this is what I
understood from reading into it.

A workaround is suggested in the last post here:
http://sourceforge.net/mailarchive/forum.php?thread_name=4D959ECA.6000004%40fnxweb.com&forum_name=xmltv-users,
but unfortunately that is not working for me. When I try that I see
this:

2012-03-28 17:23:56.224 Updating source #2 (RadioTimes) with grabber
tv_grab_uk_rt
2012-03-28 17:23:56.225 Found 12 channels for source 2 which use grabber
2012-03-28 17:23:56.641 Grabber has capabilities: baseline
manualconfig cache preferredmethod tkconfig apiconfig lineups
2012-03-28 17:23:57.055 Grabber prefers method: allatonce
2012-03-28 17:23:57.056 XMLTV config file is:
/srv/mythtv/.mythtv/RadioTimes.xmltv
Using old-style config file
http://xmltv.radiotimes.com/xmltv/94.dat: got timezone +0200 from
201203281015 +0200, but it's not +0000, +0100 or UTC
 at /usr/lib/perl5/5.8.8/Memoize.pm line 247
2012-03-28 17:23:57.766 FillData, Error: xmltv returned error code 2304
2012-03-28 17:23:57.767 Error in 52:13: unexpected end of file
2012-03-28 17:23:57.768 IconData: Updating icons for sourceid: 2
2012-03-28 17:23:57.769 No programs found in data.
2012-03-28 17:23:57.794 Failed to fetch some program info

in the logfile of Mythfilldatabase. It looks like it doesn't
understand how to treat +0200/CEST.

I installed Perl 5.14.2 from source next to Perl 5.8.8. This worked,
but the new Perl doesn't have the XMLTV modules and probably needs
other dependencies as well. Not being very experienced with these kind
of things, I don't know how to add these dependencies without risking
breaking the Perl 5.8.8 parts.

I also read posts that suggested setting the hardware clock to UTC,
but mine was already set to that.

Is there another workaround available? Upgrading to CentOS 6 should do
the trick, but unfortunately at the moment I don't have much time for
that.

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