Moved specs that really made use of ShouldAllBeEquivalentTo behavior to their own region.
Removed unnecessary use of an anonmyous type in a test.
Added a ShouldAllBeEquivalentTo spec for assertion rules.
Rewrote ShouldAllBeEquivalentTo in terms of ShouldBeEquivalentTo
Specs for another case where delared type is not respected
ShouldBeEquivalentTo now respects the Runtime/Declared type configuration options within its Enumerable related steps.