1.5.0-alpha2 tarballs up for signing/testing

Subversion 1.5.0-alpha2 is up for testing and signing. The magic
revision is r29607.

http://orac.ece.utexas.edu/pub/svn/1.5.0-alpha2/

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

Because this is an alpha, we are relaxing the signature requirement, and
will only require 2 signatures on each platform before release. As
discussed in this thread[1], the requirements to sign alpha and beta
releases are a bit looser than release candidates and regular releases.
 In short, if you experience minor failures, and still feel comfortable
signing the release, go ahead. Please include a description of the
errors with your signatures, so they can be published when we announce
the release.

Also, distro package maintainers, please to 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 alpha, all
their repositories and working copies might break unrepairably when they
upgrade to 1.5.0 proper. We don't want that kind of bad publicity,
and neither do you.

-Hyrum

[1] http://svn.haxx.se/dev/archive-2008-02/0717.shtml