Bug 300846 Add "Resolve Values" switch to Path Variables property page
HEAD Table showing path variables for a resource has 3 columns: Name, Value and Resolved Value. Given the fact that values are rather long the third column is hardly visible. My suggestion is to remove the third column and add a switch to resolve variables in the second column. I'll put up a mockup in a minute...
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);