1) Reworking cconfiguration 'id' to be separate from the config display name
2) For SBSv2, show configs that live in the project but are otherwise filtered out when managing configs (still needs cleanup)
Support for building older 2.x SBSv2 projects not working yet.
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
<classpathentry kind="output" path="bin"/>
</classpath>