Moved label element up in objectdef element in the XML schema data for a DBObjectBase

This helps emphasize that the label element is no longer optional, and to
cohere with changes I just made to the XML documentation
Qualified usage of objects in DBEditSet with this.
De-tabification and whitespace in DBObjectBaseField
Added a getFieldDef() method taking a Short param to DBObjectBase
Parameterized List param to baseChanged method in GanymedeBuilderTask
Comments
Integrating some changes I made at home to comments and docs.