[Smooks] Several class loader related unsafe places in JBoss Tools

This originally came from JBIDE-6466

I find several unsafe places which are related with Thread.currentThread().getContextClassLoader() and Thread.currentThread().setContextClassLoader(). These places in code could have dramatic outcome during JBoss Tools normal work.

6) \jbosstools\trunk\smooks\plugins\org.jboss.tools.smooks.ui\src\org\jboss\tools\smooks\edimap\editor\EDIMapFormPage.java

• here is potential unsafe code commented;