Runtimes: Create FSW-6.0 tests and updated EWP test to use EWP-5.2
Runtimes: Changed superclass of SeamPreferencesDialog to WorkbenchPreferencePage
Runtimes: Reflected change that brings JBT 4.2.0.Beta3

JBoss Seam 2.3.0 was replaced by JBoss Seam 2.3.1 in runtime download dialog