[UIMA-4135] Fix a bad test case (was updating begin / end after insert into index in several places) found by reporting.  Add reporting test

git-svn-id: https://svn.apache.org/repos/asf/uima/uimaj/trunk@1644985 13f79535-47bb-0310-9956-ffa450edef68
[UIMA-4135] optimize updateDocumentAnnotation, fix multiple addback case to drop the remember-er from the list in CASImpl when done, fix the CasCopier to un-index the documentat annotation before updating it, and then re-index it.

git-svn-id: https://svn.apache.org/repos/asf/uima/uimaj/trunk@1644991 13f79535-47bb-0310-9956-ffa450edef68
[UIMA-4146] fix typo in snapshot iterator form breaking javadoc generation

git-svn-id: https://svn.apache.org/repos/asf/uima/uimaj/trunk@1645032 13f79535-47bb-0310-9956-ffa450edef68