GUB fails on "make bootstrap"

[Joe Neeman]

Checking out the gub branch from git and running "make bootstrap" gives me the 
following error:

module-name: lib/linux.py
downloading 
http://lilypond.org/download/gub-sources/libc6-dev_2.3.2.ds1-22sarge4_i386.deb
...................................................
downloading 
http://lilypond.org/download/gub-sources/linux-kernel-headers_2.5.999-test7-bk-17_i386.deb
Traceback (most recent call last):
  File "gub-builder.py", line 339, in ?
    main ()
  File "gub-builder.py", line 303, in main
    spec_object_dict[i].do_download ()
  File "lib/gub.py", line 101, in do_download
    self.vc_repository.download ()
  File "lib/repository.py", line 172, in download
    misc.download_url (self.url, self.dir)
  File "lib/misc.py", line 146, in download_url
    url_stream = opener.open (url)
  File "/usr/lib64/python2.4/urllib.py", line 190, in open
    return getattr(self, name)(url)
  File "/usr/lib64/python2.4/urllib.py", line 322, in open_http
    return self.http_error(url, fp, errcode, errmsg, headers)
  File "/usr/lib64/python2.4/urllib.py", line 339, in http_error
    return self.http_error_default(url, fp, errcode, errmsg, headers)
  File "/usr/lib64/python2.4/urllib.py", line 345, in http_error_default
    raise IOError, ('http error', errcode, errmsg, headers)
IOError: ('http error', 404, 'Not Found', <httplib.HTTPMessage instance at 
0x2ae22f3e4758>)
make: *** [cross-compilers] Error 1