change: - Interface 'Validator' renamed to 'IValidator'.

.../systemsx/cisd/common/collections/CompositeValidator.java

.../systemsx/cisd/common/collections/FilteredCollection.java

...ava/ch/systemsx/cisd/common/collections/FilteredList.java

.../java/ch/systemsx/cisd/common/collections/IValidator.java

...a/ch/systemsx/cisd/common/collections/RegExValidator.java

...a/ch/systemsx/cisd/common/collections/ValidatorUtils.java

...temsx/cisd/common/collections/CompositeValidatorTest.java

...ch/systemsx/cisd/common/collections/FilteredListTest.java

.../systemsx/cisd/common/collections/ValidatorUtilsTest.java