Weirdness while testing 1.4.0-rc2 (svnserve processes that don't die)

I've tested 1.4.0-rc2 like so:

   (fsfs|bdb) x (dav|svn|local) + py + pl

Everything passes, except one permutation. I'm seeing weirdness while
testing 1.4.0-rc2 over svnserve with BDB backends. But it's different
weirdness than I saw with rc1. Basically, it appears that svnserve
processes get created but never die. See the attached output.

Garrett, can you reproduce the same?

-- 
C. Michael Pilato <cmpilato@collab.net>
CollabNet   <>   www.collab.net   <>   Distributed Development On Demand

### FIRST, KILL OFF ALL MY SVNSERVE PROCESSES

$ ps axwww | grep svnserve | grep -v grep | cut -c1-5 | xargs kill -9
$ ./commit_tests.py 1 --url svn://localhost
svn: Can't connect to host 'localhost': Connection refused
FAIL: commit_tests.py 1: commit one file

### NOW, START THE SERVER

$ svnserve -d -r `pwd`

### RUN COMMIT_TESTS 1 WITH FSFS BACKEND, AND SEE IF MY SVNSERVE IS
### STILL AROUND

$ ./commit_tests.py 1 --url svn://localhost
PASS: commit_tests.py 1: commit one file
$ ps axwww | grep svns
11421 ? Ss 0:00 svnserve -d -r /home/cmpilato/tmp/subversion-1.4.0-rc2/subversion/tests/cmdline
11782 pts/3 R+ 0:00 grep svns

### DO THE SAME AGAIN, BUT WITH BDB BACKEND. UH-OH. WHY ALL THE
### LINGERING PROCESSES?

$ ./commit_tests.py 1 --url svn://localhost --fs-type bdb
PASS: commit_tests.py 1: commit one file
$ ps axwww | grep svns
11421 ? Ss 0:00 svnserve -d -r /home/cmpilato/tmp/subversion-1.4.0-rc2/subversion/tests/cmdline
11812 ? S 0:00 svnserve -d -r /home/cmpilato/tmp/subversion-1.4.0-rc2/subversion/tests/cmdline
11869 ? S 0:00 svnserve -d -r /home/cmpilato/tmp/subversion-1.4.0-rc2/subversion/tests/cmdline
11870 ? S 0:00 svnserve -d -r /home/cmpilato/tmp/subversion-1.4.0-rc2/subversion/tests/cmdline
12109 ? S 0:00 svnserve -d -r /home/cmpilato/tmp/subversion-1.4.0-rc2/subversion/tests/cmdline
12110 ? S 0:00 svnserve -d -r /home/cmpilato/tmp/subversion-1.4.0-rc2/subversion/tests/cmdline
12125 ? S 0:00 svnserve -d -r /home/cmpilato/tmp/subversion-1.4.0-rc2/subversion/tests/cmdline
12140 ? S 0:00 svnserve -d -r /home/cmpilato/tmp/subversion-1.4.0-rc2/subversion/tests/cmdline
12141 ? S 0:00 svnserve -d -r /home/cmpilato/tmp/subversion-1.4.0-rc2/subversion/tests/cmdline
12143 pts/3 R+ 0:00 grep svns