[mythtv] imdb.pl lookup broken

[Steven]

Looks like imdb.com has changed the way they show search results and now
the parser is't working any more. Manually entering imdb nummbers still
works.

A quick look shows that for example the string "Exact Matches" has
become "Titles (Exact Matches)" (line 428) 
But also the way the titles are displayed has changed and that is a less
easy fix for a perl illiterate.

Steven