Pass the commit keyword used to update the issue to the plugin hook.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@12198 e93f8b46-1217-0410-a6f0-8f06a7374b81
Don't update issues nor log time when importing old changesets (#4823).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@12199 e93f8b46-1217-0410-a6f0-8f06a7374b81
Hide issue custom fields when disabling issue tracking on new project.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@12200 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rows may not be oredered as expected with ruby1.8 (#4911).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@12201 e93f8b46-1217-0410-a6f0-8f06a7374b81