[PATCH] Fix python testsuite issues ("Can't remove re-cache.db")

Hello there,

I looked somewhat further into the "Cannot remove <repository>" issue
(http://svn.haxx.se/dev/archive-2009-04/0943.shtml and following) when
running the python testsuite on my Windows box. The following patch
fixes all "Can't remove <repos>" exceptions for me. I have still 2 other
failures, but these have to wait for now...

Regards,
jens

[[[
Fixes some python testsuite failures
("Can't remove <path>\rep-cache.db")on Windows.

* subversion/bindings/swig/python/tests/mergeinfo.py
   (tearDown):
* subversion/bindings/swig/python/tests/wc.py
   (tearDown):
Close references to the test repository so that it can be
deleted nicely.

* subversion/bindings/swig/python/tests/ra.py
   (tearDown):
* subversion/bindings/swig/python/tests/repository.py
   (tearDown):
Override tearDown to close references to the test repository
so that it can be deleted nicely.

Patch by: jpeters7677 { at } gmx.de
]]]

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