Tom Christiansen's Perl Unicode Cookbook 1st draft

originally posted to perl5-porters as message-id
18479.1330388058@chthon
Fixes for a few trivial typos
perlunicook: add perlunicook to MANIFEST
perlunicook: add it to build files and TOC
perlunicook: remove empty list item
perlunicook: add trusted-to-exist links for perlunicook
Merge branch 'perlunicook' into blead