Rename package collections to collection.

...isd/ant/task/subversion/SVNRecursiveCheckoutTaskTest.java

common/resource/dependency-structure.ddf

...x/cisd/common/collection/AbstractCollectionDecorator.java

...java/ch/systemsx/cisd/common/collection/CollectionIO.java

...a/ch/systemsx/cisd/common/collection/CollectionStyle.java

...a/ch/systemsx/cisd/common/collection/CollectionUtils.java

...h/systemsx/cisd/common/collection/CompositeValidator.java

.../cisd/common/collection/ExtendedBlockingQueueFactory.java

...x/cisd/common/collection/ExtendedLinkedBlockingQueue.java

...h/systemsx/cisd/common/collection/FilteredCollection.java

...java/ch/systemsx/cisd/common/collection/FilteredList.java

...x/cisd/common/collection/FromStringIdentityConverter.java

.../java/ch/systemsx/cisd/common/collection/GroupingDAG.java

...stemsx/cisd/common/collection/IExtendedBlockingQueue.java

...systemsx/cisd/common/collection/IFromStringConverter.java

...ava/ch/systemsx/cisd/common/collection/IKeyExtractor.java

.../java/ch/systemsx/cisd/common/collection/IModifiable.java

...h/systemsx/cisd/common/collection/IMultiKeyExtractor.java

...a/ch/systemsx/cisd/common/collection/IQueuePersister.java

...h/systemsx/cisd/common/collection/IToStringConverter.java