Bug 293787 Markers view not filtering by workingsets
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerContentGenerator.java
while (filtersIterator.hasNext()) {
					MarkerFieldFilterGroup group = (MarkerFieldFilterGroup) filtersIterator
							.next();
					if (!group.selectByScope(entry, resources)
							|| !group.selectByFilters(entry)) {
						return false;
					}
				}
				return true;
			}
			while (filtersIterator.hasNext()) {
				MarkerFieldFilterGroup group = (MarkerFieldFilterGroup) filtersIterator
						.next();
				if (group.selectByScope(entry, resources)
						&& group.selectByFilters(entry)) {
					return true;
				}
			}
			return false;
		}
		return true;
	}
	/**
	 * Update the focus resources from list. If there is an update required
	 * return <code>true</code>. This method assumes that there are filters on
	 * resources enabled.
	 * 
	 * @param elements
	 */
	void internalUpdateSelectedElements(Object[] elements) {