Fix handling of rules for unversioned classes.
Fix handling of rules for unversioned classes.

Unversioned classes' default version number is technically -1,
so we need to properly account for this in TSchemaRule::TestVersion
so that the rule applies to the default unversioned schema when
the rule specifies version="[1-]"

strykejern/TTreeReader,tc3t/qoot,tc3t/qoot,Dr15Jones/root,tc3t/qoot,kirbyherm/root-r-tools,tc3t/qoot,Dr15Jones/root,tc3t/qoot,strykejern/TTreeReader,ffurano/root5,ffurano/root5,kirbyherm/root-r-tools,ffurano/root5,tc3t/qoot,Dr15Jones/root,kirbyherm/root-r-tools,Dr15Jones/root,kirbyherm/root-r-tools,strykejern/TTreeReader,strykejern/TTreeReader,ffurano/root5,strykejern/TTreeReader,Dr15Jones/root,tc3t/qoot,kirbyherm/root-r-tools,ffurano/root5,strykejern/TTreeReader,tc3t/qoot,ffurano/root5,tc3t/qoot,ffurano/root5,strykejern/TTreeReader,kirbyherm/root-r-tools,Dr15Jones/root,Dr15Jones/root,kirbyherm/root-r-tools,tc3t/qoot