Handle dirent roots instead of asserting that we will never reach them while locating parents to include. We reach this assertion from our testset on Windows when committing a root directory in update_test.py 32.
Handle dirent roots instead of asserting that we will never reach them
while locating parents to include. We reach this assertion from our
testset on Windows when committing a root directory in update_test.py
32.

* subversion/libsvn_client/commit.c
  (svn_client_commit4): Walk up the parent directory chain, stopping looking
    for parents to lock when we either find a root or the common base.

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