Add clause adaptation for AliasedClass to with_parent()

Add clause adaptation for AliasedClass to with_parent()

Fixed bug where :meth:`.Query.with_parent` would not work if the
:class:`.Query` were against an :func:`.aliased` construct rather than
a regular mapped class.  Also adds a new parameter
:paramref:`.util.with_parent.from_entity` to the standalone
:func:`.util.with_parent` function as well as
:meth:`.Query.with_parent`.

Change-Id: Ic684dd63cc90b582c7580c9bba3c92fa3f286da7
Fixes: #3607