Git patch added (#259) with annotate support. Changeset revision field changed to string.

TODO:
* fix Darcs support and add tests for Darcs
* maybe remove scmid column by moving commit hashes to Changeset#revision for all DSCM

git-svn-id: http://redmine.rubyforge.org/svn/branches/work@1201 e93f8b46-1217-0410-a6f0-8f06a7374b81

git/app/controllers/repositories_controller.rb

@@ -134,7 +134,7 @@ class RepositoriesController < ApplicationController
   end
   
   def diff
-    @rev_to = params[:rev_to] ? params[:rev_to].to_i : (@rev - 1)
+    @rev_to = params[:rev_to]
     @diff_type = params[:type] || User.current.pref[:diff_type] || 'inline'
     @diff_type = 'inline' unless %w(inline sbs).include?(@diff_type)
     
@@ -185,7 +185,7 @@ private
     render_404 and return false unless @repository
     @path = params[:path].join('/') unless params[:path].nil?
     @path ||= ''
-    @rev = params[:rev].to_i if params[:rev]
+    @rev = params[:rev]
   rescue ActiveRecord::RecordNotFound
     render_404
   end