[podwiki] table support

[Thomas L. <to...@co...>]

finally I implemented tables for the POD markup too, it seems to work
as I expect. The question now is: shall we do this for the WikiShorthand
formatter too? I'm not sure.

Here is how it looks in POD:

  http://www.daemon.de/test/podwiki.pl?page=SandBox



regards, Tom

-- 
 Thomas Linden   (http://www.daemon.de/)  tom at co dot daemon dot de
 $_=`perl -v`;s;^.*ll;;s;$^=unpack"u", "'8V]D;')E<```";s;\W;;gs;$/=7*
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 ord($_)-$/}split//,'1I7E13?@E:7C1A7C=1:35<7C'];s"0(.)" \U$1"g;print;