package/openldap: new package

Signed-off-by: David Bender <codehero@gmail.com>
[yann.morin.1998@free.fr:
  - remove ldaps config option, use build-time dependencies
  - add dependencies against openssl/gnutls/libnss as appropriate
  - fix mis-detected tls support when openssl is enabled
  - fix strip at install time
  - cleanup configure arguments
  - add hash file
  - fix help entry
]
[Peter: needs wchar]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>