uc_signup 6.x-1.0-beta6

Bug Fixes:
#848726: Temporary signups not being canceled in uc_signup_order by lesmana
#861058: Duplicate signups created durring finalization by ezra-g
#910104: User email/account not linked to signup - missing dependency on uc_payment by ezra-g
#906722: Signup confirmation mails not sent by ezra-g
#858004: update 6000 fails on postgresql by John Franklin
#865384: Ubercart generated passwords for anonymous users are only one character. by brentratliff

New Features:
Feature #912792: Provide default value for uc_signup_add_cart_text . by ezra-g