add Pop() to context menu, so on OSX we can pop via menu (as there is no convenient middle mouse button).
add Pop() to context menu, so on OSX we can pop via menu (as there is no
convenient middle mouse button).


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@41734 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT