Fix #34897: Select edge loop shortcut not working in Maya preset

Made it so loop/ring selection are assigned to RELEASE button,
so they're not conflicting with regular selection.

There's still seems to be a conflict between loop and ring
selection, but it was here for ages and that's another story.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56085 954f8c5b-7b00-dc11-b283-0030488c597c