Extend changes.path and changes.from_path to support longer paths. #5771

Long paths to SCM files would be truncated or wouldn't insert into some
databases.  This extends those fields to support arbitrary length filenames.

Contributed by Holger Just

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3828 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/lib/redmine/scm/adapters/git_adapter_test.rb

@@ -13,7 +13,7 @@ class GitAdapterTest < ActiveSupport::TestCase
     end
 
     def test_getting_all_revisions
-      assert_equal 12, @adapter.revisions('',nil,nil,:all => true).length
+      assert_equal 13, @adapter.revisions('',nil,nil,:all => true).length
     end
     
     def test_annotate