Bug 82231 [build path] Hard to find type restriction compiler problem preferences
I20050104-1600 There compiler preference page contains a Warning/Error node with many sub-entries . I tried to find where I could change the 'warning' for the access of internal types to 'error'. No luck until I realized that the Build node also contains Warning/Error settings.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/BuildPathsBlock.java
* If the project already exists only build paths are updated.
	 */
	private void internalConfigureJavaProject(List classPathEntries, IPath outputLocation, IRemoveOldBinariesQuery reorgQuery, IProgressMonitor monitor) throws CoreException, OperationCanceledException {
		
		
		
		if (!fWorkspaceRoot.exists(outputLocation)) {
			IFolder folder= fWorkspaceRoot.getFolder(outputLocation);
			CoreUtility.createFolder(folder, true, true, null);
			folder.setDerived(true);		
		}
		
		if (monitor.isCanceled()) {
			throw new OperationCanceledException();
		}
		monitor.worked(2);
				
		int nEntries= classPathEntries.size();
		IClasspathEntry[] classpath= new IClasspathEntry[nEntries];
		
		
		for (int i= 0; i < nEntries; i++) {
			CPListElement entry= ((CPListElement)classPathEntries.get(i));
			IResource res= entry.getResource();
			if ((res instanceof IFolder) && !res.exists()) {
				CoreUtility.createFolder((IFolder)res, true, true, null);
			}
			if (entry.getEntryKind() == IClasspathEntry.CPE_SOURCE) {
				IPath folderOutput= (IPath) entry.getAttribute(CPListElement.OUTPUT);
				if (folderOutput != null && folderOutput.segmentCount() > 1) {