1.5.4 up for signing/testing

I'm pleased to announce that Subversion 1.5.4 is up for testing and signing.
This comes quickly on the heels of 1.5.3 due to a regression. The magic
revision is r33841. You can find the tarball here:

http://orac.ece.utexas.edu/pub/svn/1.5.4/

You know the drill: signatures from full committers back to me, and enthusiastic
tester feedback is welcome. At this point, this candidate is not yet blessed
for wide release, so please don't make it available to people not interested in
test-driving the new release.

Distro package maintainers, please do NOT include any pre-release builds, even
blessed, into operating system distros. The reasons for not doing so were very
eloquently outlined by Karl in a mail, which is summarized at the above address.

The quick version is: we don't guarantee compatibility between the pre-releases
and the final release, so if people install the release candidate, all their
repositories and working copies might break irrepairably when they upgrade to
1.5.4 proper. We don't want that kind of bad publicity, and neither do you.

-Hyrum