437298: allow Hudson tests to be excluded

Change-Id: Idc70c9bf6345e9e915af9a2230e06e0443b564c7
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=437298
Signed-off-by: Sam Davis <sam.davis@tasktop.com>
fix workspace warnings in Hudson connector

* ignores or externalizes strings when it's obvious which to do
* replaces calls to deprecated release(monitor) with release()

Change-Id: I6aadfc825679f00dfdab47e805e09c481ad03fbc
Signed-off-by: Sam Davis <sam.davis@tasktop.com>