Fix SBSv2 SDK filtering.
(1) When only SBSv2 is available, assume all SDKs are SBSv2-capable.
(2) In the SBSv1+SBSv2 case, ensure the version check >= 8.3 is correct (it was disallowing anything with minor version < 3).
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry excluding="com/nokia/sdt/sourcegen/doms/rss/TestCdtScanner.java|com/nokia/sdt/sourcegen/doms/rss/TestCdtScannerOld.java|com/nokia/sdt/sourcegen/doms/rss/TestCdtScannerOld2.java|com/nokia/sdt/sourcegen/doms/rss/parser/TestCdtScanner.java|com/nokia/sdt/sourcegen/doms/rss/parser/TestCdtScannerOld.java|com/nokia/sdt/sourcegen/doms/rss/parser/TestCdtScannerOld2.java|com/nokia/sdt/sourcegen/templates/frontend/OldTokenizer.java|com/nokia/sdt/sourcegen/contributions/domains/cpp/CopyOfWorkspaceSourceManipulator.java" 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>