[m-rev.] for review: improve var/functor type mismatch diagnostics

[Zoltan Somogyi]

For review by anyone.

Zoltan.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Log.vf
Type: application/octet-stream
Size: 617 bytes
Desc: not available
URL: <http://lists.mercurylang.org/archives/reviews/attachments/20251014/084ebf4e/attachment-0002.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: DIFF.vf
Type: application/octet-stream
Size: 25797 bytes
Desc: not available
URL: <http://lists.mercurylang.org/archives/reviews/attachments/20251014/084ebf4e/attachment-0003.obj>