Simple query with category in gnatsweb 4.0

[Lars Henriksen]

If you do a simple query in Gnatsweb 4.0 and select a specific category,
e.g. "test", Gnatsweb 4.0 will turn this into a matching query when asking
gnatsd:

     expr (Category~"test")

instead of doing in exact query:

     expr (Category="test")

This is not what I would expect and different from Gnatsweb 2.9 behaviour.

Lars Henriksen