clean up SDK/Config tree by removing SDK Id from display (it's redundant) and also adding text that SDK location does not exist so users can see the config tree and know it won't work (not have it be hidden and users wonder why it's not there)
<?xml version="1.0" encoding="UTF-8"?>
<?NLS TYPE="org.eclipse.help.toc"?>
<toc label="Carbide.c++ User Guide" href="html/debugger.htm" >
<topic label="Release notes" href="html/release_notes.htm" />
<link toc="tocCarbide.xml" />
<anchor id="anchorCarbideCPPMisc" />
<topic label="Bugs fixed" href="html/bugs_fixed.htm" />
<anchor id="anchorNokiaOther" />
<topic label="Legal" href="html/legal.htm" />
</toc>