* Some slightly hacky LDAP support. The problem is that Glibc has to

  be able to find the LDAP NSS module, which is normally installed in
  Glibc's prefix (under /lib/libnss_ldap...).  Of course, we can't do
  that; it wouldn't be pure.  As a workaround, we simply add nss_ldap
  to the LD_LIBRARY_PATH of the nscd daemon, which every other program
  uses for lookups.  So we don't have to put nss_ldap in the
  LD_LIBRARY_PATH of every program.

svn path=/nixos/trunk/; revision=7684