[Cooker] rpmdrake hangs if root can't read cwd

[Garrick Staples]

My home directory is nfs mounted and restricts root.  Running rpmdrake
from my home directory cause urpmq to endlessly loop.  The GUI is
effectively locked, but will eventually time out.  I don't see this as a
show-stopper, but should be known.

rpmdrake-1.4-14mdk
urpmi-3.3-14mdk

Trying to use rpmdrake to just install something simple from a local
cooker directory:

  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME COMMAND
   2569 root      14   0 1113M 859M  1696 R    15.0 85.5   2:04 urpmq


strace shows:
stat64(".", 0xbffffa30)                 = -1 EACCES (Permission denied)
stat64(".", 0xbffffa30)                 = -1 EACCES (Permission denied)
stat64(".", 0xbffffa30)                 = -1 EACCES (Permission denied)
stat64(".", 0xbffffa30)                 = -1 EACCES (Permission denied)
brk(0x38c11000)                         = 0x38c11000
stat64(".", 0xbffffa30)                 = -1 EACCES (Permission denied)
and on and on...