LArRawConditions: Change std::pair selection patterns back to explicit names.
In the selection.xml files, we were using patterns to select std::pair classes. The reason is that we were earlier seeing errors if we did not also have dictionaries for the __pair_base classes.
But these patterns are causing issues, either selecting too much or too little. Further, it appears that with the current versions of root and gcc, the pair_base dictionaries are no longer needed. So switch the patterns back to explicit names.
Edited by Scott Snyder