Bug 298835 Merge e4 Project Path Variable back into the 3.6 stream
The virtual folder and filters changes are already in 3.6, the project path variable changes in e4 still remains to be merged.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/PathVariablesGroup.java
variableLabel.setText(IDEWorkbenchMessages.PathVariablesBlock_variablesLabel);
        else
            variableLabel.setText(NLS.bind(
                                    IDEWorkbenchMessages.PathVariablesBlock_variablesLabelForResource,
                                    currentResource.getName()));
        data = new GridData();
        data.horizontalAlignment = GridData.FILL;
        data.horizontalSpan = 2;
        variableLabel.setLayoutData(data);
        variableLabel.setFont(font);
        int tableStyle = SWT.BORDER | SWT.FULL_SELECTION;
        if (multiSelect) {
            tableStyle |= SWT.MULTI;
        }
        variableTable = new Table(pageComponent, tableStyle);
        variableTable.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                updateEnabledState();
                if (selectionListener != null) {
					selectionListener.handleEvent(new Event());
				}
            }
        });
        
        TableColumn tableColumn = new TableColumn(variableTable, SWT.NONE);
        tableColumn.setText(IDEWorkbenchMessages.PathVariablesBlock_nameColumn);
        tableColumn.setWidth(150);
        tableColumn = new TableColumn(variableTable, SWT.NONE);
        tableColumn.setText(IDEWorkbenchMessages.PathVariablesBlock_valueColumn);
        tableColumn.setWidth(250);