Fix Compiler errors when not using Oracle JDK
A few sources depend on *.sun.* classes which are available in the
Oracle JDK but not necessarily in generic Java 5, 6 or 6.
When .classpath enforced plain JavaSE 5, 6, 7, those sources would not
compile.
Merge pull request #581 from berryma4/3.3.x

Fix Compiler errors when not using Oracle JDK
fixing imports and classpaths for tycho build
Merge pull request #582 from berryma4/3.3.x

fixing imports and classpaths for tycho build
fixing import package works in IDE and not in tycho build
fixing version numbers for PDE headless build
fixing version numbers for PDE headless build
o.c.pvmanager.ca.feature: increased version
o.c.utilities.feature: increased version
Update feature.xml
Update pom.xml
Merge pull request #583 from berryma4/3.3.x

fixing import package works in IDE and not in tycho build
Merge branch '3.3.x' of https://github.com/ControlSystemStudio/cs-studio.git into nsls2-3.3.x