suppress warnings in mail/patterns.rb on Ruby 1.9.
suppress warnings in mail/patterns.rb on Ruby 1.9.

.../mail/lib/mail/patterns.rb:30: warning: character class has duplicated range: /[\(\)<>\[\]:;@\\,\."\x00-\x1f\x7f-\xff
]/
.../mail/lib/mail/patterns.rb:32: warning: character class has duplicated range: /[\(\)<>@,;:\\"\/\[\]\?=\x00-\x1f\x7f-\xff
]/

EdwardPantoja/mail,kert-io/mail,EdwardPantoja/mail,pjskennedy/mail,schepedw/mail,benmmurphy/mail,kjg/mail,jonkgrimes/mail,schneems/mail,kert-io/mail,pushrax/mail,0x00evil/mail,schneems/mail,jonkgrimes/mail,agaridata/mail,jeremyevans/mail,jeremyevans/mail,jeremy/mail,smallspark/mail,smallspark/mail,yujinakayama/mail,jeremy/mail,zacholauson/mail,pushrax/mail,mikel/mail,owenr/mail,kjg/mail,benmmurphy/mail,kainlite/mail,planio-gmbh/mail,carsonreinke/mail,carsonreinke/mail,kaineer/mail,zacholauson/mail,pascalbetz/mail,Schniz/mail,missive/mail,wktk/mail,kaineer/mail,agaridata/mail,wktk/mail,0x00evil/mail,pjskennedy/mail,schepedw/mail