More fixes for fakeroot-hurd

[Justus Winter]

Hi :)

with this in, fakeroot-hurd builds the gnumach package just fine.

[PATCH 01/13] libfshelp: use a hash table in get-identity.c

This considerably improves performance of filesystem translators
handing out lots of identity ports.  fakeroot triggers just that.

[PATCH 02/13] libihash: remove dead code
[PATCH 03/13] trans: fix the use of the hash table in fakeroot.c
[PATCH 04/13] trans: improve the performance of dir_lookup in
[PATCH 05/13] trans: handle invalid responses to dir_lookup requests
[PATCH 06/13] trans: fix locking issue in fakeroot
[PATCH 07/13] trans: return nodes locked when creating fake nodes in
[PATCH 08/13] trans: fix reference counting and destruction of fake
[PATCH 09/13] trans: fix locking in fakeroot's netfs_S_dir_lookup
[PATCH 10/13] trans: fix reference counting bug in fakeroot
[PATCH 11/13] trans: improve the error handling in fakeauth
[PATCH 12/13] trans: unlock nodes with faked attributes in fakeroot
[PATCH 13/13] console-client: remove spurious pthread_spin_unlocks

Could you have a look at this one? I haven't tested this patch, but
the unlocking seems totally unreasonable to me (even if it might very
well be harmless).

Justus