twitpic.lua: exclude links like...
twitpic.lua: exclude links like...

http://twitpic.com/ea13l0/%5C%22http:%5C/%5C/twitpic.com%5C/show%5C/large%5C/
ArchiveTeam/twitpic-grab,ArchiveTeam/twitpic-grab,ArchiveTeam/twitpic-grab