Set version to 3.3.0.

git-svn-id: http://svn.redmine.org/redmine/branches/3.3-stable@15423 e93f8b46-1217-0410-a6f0-8f06a7374b81

diff --cc lib/redmine/version.rb
index 7fbfd0af8cdf4b67c77c571f2506587a4a6a6024,718ae0bdd72a621814136080965963d2a3754aaa..bf7238a0cd7998758f9905747c77ea1693e946b2
--- 1/lib/redmine/version.rb
--- 2/lib/redmine/version.rb
+++ b/lib/redmine/version.rb
@@@ -10,7 -10,7 +10,7 @@@ module Redmin
      # * official release: nil
      # * stable branch:    stable
      # * trunk:            devel
--    BRANCH = 'devel'
++    BRANCH = 'stable'
  
      # Retrieves the revision from the working copy
      def self.revision