bitbake -b busted

[Phil Blundell <pb@pbcl.net>]

Since updating this morning, it seems that oe-core master now requires
bitbake 1.13.1 to be installed.  (I don't recall any discussion of that
change or the reasons for it, but no doubt they are good ones.)

I couldn't find a 1.13.1 tag (or in fact any tags after 1.12.0) in the
bitbake repository so I pulled the head of master.  Judging from the
contents of the log this is pretty close to 1.13.1 if not identical.

Unfortunately, this update seems to have broken "bitbake -b <file>"
altogether.  Any such command now seems to give me:

ERROR: Command execution failed: Traceback (most recent call last):
  File "/home/pb/oe/bitbake/lib/bb/command.py", line 102, in runAsyncCommand
    commandmethod(self.cmds_async, self, options)
  File "/home/pb/oe/bitbake/lib/bb/command.py", line 190, in buildFile
    command.cooker.buildFile(bfile, task)
  File "/home/pb/oe/bitbake/lib/bb/cooker.py", line 774, in buildFile
    fn = self.matchFile(fn)
  File "/home/pb/oe/bitbake/lib/bb/cooker.py", line 752, in matchFile
    matches = self.matchFiles(buildfile)
  File "/home/pb/oe/bitbake/lib/bb/cooker.py", line 735, in matchFiles
    filelist, masked = self.collect_bbfiles()
  File "/home/pb/oe/bitbake/lib/bb/cooker.py", line 994, in collect_bbfiles
    files.sort( key=lambda fileitem: self.calc_bbfile_priority(fileitem) )
  File "/home/pb/oe/bitbake/lib/bb/cooker.py", line 994, in <lambda>
    files.sort( key=lambda fileitem: self.calc_bbfile_priority(fileitem) )
  File "/home/pb/oe/bitbake/lib/bb/cooker.py", line 463, in calc_bbfile_priority
    for _, _, regex, pri in self.status.bbfile_config_priorities:
AttributeError: 'NoneType' object has no attribute 'bbfile_config_priorities'

p.