Add a FS test that tries to reproduce the FS checksum validation issue that was reported on the list.  It turns out that this will *not* produce an error message - but also does not check the checksum.  So, keep this test to check that actually calculating and comparing checksums does not break it.
Add a FS test that tries to reproduce the FS checksum validation issue
that was reported on the list.  It turns out that this will *not* produce
an error message - but also does not check the checksum.  So, keep this
test to check that actually calculating and comparing checksums does not
break it.

https://lists.apache.org/thread.html/9f435b7201a7632df71269c6c8f74e91fb758ecc16b8f7811bd83c9f@%3Cdev.subversion.apache.org%3E

* subversion/tests/libsvn_fs/fs-test.c
  (test_cache_clear_during_stream): New test.
  (test_funcs): Register new test. 

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1781650 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion