verifyObject masks exceptions raised while accessing attributes

[Māris Fogels]

The verifyObject() and verifyClass() functions in zope.interface.verify use the Python hasattr() function. As a result verifyObject() will mask any exceptions raised by attributes or Python properties, returning a BrokenImplementationError instead of re-raising the original exception.

I've attached a quick doctest showing the problem.

[Alex Smith (ajsmith)]

This was fixed in zope.interface 3.5.1.