Updated copyright notices to include the year 2018.
Updated copyright notices to include the year 2017.
global: Added missing copyright notices.
lib-fts: allow hyphen character in domain part Allow hyphen character and remove possible trailing hyhpen character when email tokenization is done.
lib-fts: remove trailing period character from email-address any trailing period character '.' should be removed when email tokenization is done.
lib-fts: Lift helper function out of generic tokenizer.