Ctrl+Alt+SelectMouse now does "Select all keyframes in same channel" in
DopeSheet too

Previously, it only worked in the Graph Editor, though I thought I had
implemented it here too.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@60895 954f8c5b-7b00-dc11-b283-0030488c597c