Bug fix #34822

Tiny tweak in "Any key modifier" code. It now refuses to accept events when you hold
any key, and then press another key - unless that has key-modifier set.

This enables Houdini style "Hold Spacebar - Leftmouse" view moves.




git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56142 954f8c5b-7b00-dc11-b283-0030488c597c