Move unified diff parser out of the scm abstract adapter so it can be reused for viewing attached diffs (#1403).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1513 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/scm/adapters/git_adapter.rb

@@ -204,7 +204,7 @@ module Redmine
           revisions
         end
         
-        def diff(path, identifier_from, identifier_to=nil, type="inline")
+        def diff(path, identifier_from, identifier_to=nil)
           path ||= ''
           if !identifier_to
             identifier_to = nil
@@ -220,7 +220,7 @@ module Redmine
             end
           end
           return nil if $? && $?.exitstatus != 0
-          DiffTableList.new diff, type
+          diff
         end
         
         def annotate(path, identifier=nil)