Rename - Ctrl+R (Replace changed Ctrl+R -> Alt+R),
Find references - F12 (VS uses F12 for Go to definition)
Go to derived class / override - F11
Go to base class - no shortcut
To make these shortcuts work, added items to "Search" menu.
Modified AbstractEntity.IsOverridable to return true also for interface members.
git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@6093 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61