Attributes in WITH...WHERE

[jmarton]

Similarly to #331, WHERE clause might also refer to variables that are not retained by the projection.

E.g. the following should compile and resolve:

MATCH (p:Person)--(h:House)
WITH p
WHERE h.year > 2000
RETURN p

Currently, it leads to an exception:

ingraph.compiler.exceptions.NameResolutionException: Unresolvable name h.