Add missing dictionaries

The ROOT team has written (in ROOT6) a routine to check for missing dictionaries for classes used persistently.  While testing this routine, I found three missing dictionaries for persistent classes.  This has not caused a problem, because all three classes are instances of std::vector<T>, and root can usually handle std::vector<T> without a dictionary if it has a dictionary for T.  However, such handling is less efficient without a dictionary. This pull request adds the missing dictionaries.
This pull request is totally technical, so signatures should be bypassed if not signed in a reasonable amount of time.
I tested this pull request with the short relval matrix and saw no errors.