Make diff_tests.py 45 pass with --fs-type bdb again.
Make diff_tests.py 45 pass with --fs-type bdb again.

* subversion/libsvn_fs_base/err.c
  (svn_fs_base__err_dangling_rev): Change error text to be more
    consistent with what FSFS uses (and sound less like an internal
    corruption of the repository anyway).

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion