Version Control With Subversion Source

already under version control in the same repository is a little pointless.

* src/it/lab/Makefile.base-rules.orig
* src/it/lab/Makefile.base-vars.orig

Delete files which were added, instead of being copied with history,
because this made imporant differences much less obvious.
(These will be recreated correctly in a moment.)

* src/it/lab/Makefile.base-rules
* src/it/lab/Makefile.base-vars