Assign any active tool or menu to any mouse button

Let's end the left click vs right click debate for good.

I propose that if you click on a tool with your left mouse button, that tool is assigned to the left click. Click on another tool with your right mouse button and that tool is assigned to your right mouse button. A new menu tool will be added to the active tools bar for those who like to see a right click menu. With this change, there will be no need to commit permanently to left or right click for use in the 3d view or uv editor.

This could be represented in the interface as a new menu button on the toolbar, and buttons could be highlighted with different colors to represent what tool is assigned to each mouse button. Another option would be to have the right side of a button highlight if it is assigned to the right mouse button or the left side for the left button.