JDK 1.4 dependencies

I have been looking at the removal of dependencies from the gump profile 
which can be satisfied by JDK 1.4.

In some respects this is quite straight forward, just remove the 
dependencies on things like jaxp and jsse. I am a little hesitant to follow 
that course because in reality the projects do depend on these facilities, 
it's just that JDK1.4 provides these facilities directly.

What I am looking for is a way to have Gump recognize that these facilities 
are provided by the JDK and to skip the check for the package jars. I 
thought of adding a <jdk version="1.4+"/> to the project definitions, the 
result would be to check the JDK version first and the the package jars.

Thoughts?
Conor