incorrect Last Changed Rev after upgrade from 1.6.17 to 1.7.5

I've upgraded Subversion from 1.6.17 to 1.7.5 (Debian/unstable).
And there's the following problem:

Subversion 1.7.5 no longer notices a change of revision of some file
when a parent directory has been moved. In particular, this yields
incorrect keyword expansion.

The bug can be reproduced with the following script:

------------------------------------------------------------
#!/bin/sh

set -e

mkdir my-test-svn
cd my-test-svn

svnadmin create svn
svn co file://`pwd`/svn wc
cd wc

svn mkdir dir1
svn ci -m 'add dir1'

printf '\044Revision\044\nfoo\n' > dir1/file
svn add dir1/file
svn propset svn:keywords Revision dir1/file
svn ci -m 'add dir1/file'
echo "File dir1/file:"
cat dir1/file

svn up
svn mv dir1 dir2
echo "File dir2/file:"
cat dir2/file
svn ci -m 'mv dir1 dir2'
echo "File dir2/file:"
cat dir2/file

svn up
echo "File dir2/file:"
cat dir2/file
svn info dir2/file

svn mv dir2/file .
echo "File file:"
cat file
svn ci -m 'mv dir2/file .'
echo "File file:"
cat file

cd ../..
rm -rf my-test-svn
------------------------------------------------------------

If I grep the output with '.Revision:\|Last Changed Rev:', I get:
  * svn 1.6.17 (r1128011): 2 2 3 3 3 -1 4
  * svn 1.7.5 (r1336830): 2 2 2 2 2 2 4

There are 4 differences, but only 3 really matter, because for the
last one (-1 vs 2), the commit hasn't been done yet (so that one is
in some intermediate state).

Thus the important differences (3 vs 2) correspond to:

svn ci -m 'mv dir1 dir2'
echo "File dir2/file:"
cat dir2/file

svn up
echo "File dir2/file:"
cat dir2/file
svn info dir2/file

The last test of the script shows that the problem doesn't occur
when the file itself is moved.

Because of that, when checking out a repository with svn 1.7.5, some
files seem to go back in time.

FYI, my bug report in the Debian BTS:

  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=678075

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Vincent Lefèvre <vincent@vinc17.net> - Web: <http://www.vinc17.net/>
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