* This broke corner cases when used with
      default_tkt_types = des-cbc-crc
   and DES enabled on an AD domain.
 * This is fixed in kerberos instead, in a more correct way
   and in a way which we cannot replicate.

Implemented working versions of the following functions for libcrypto:
 sss_base64_encode
 sss_base64_decode
 sss_hmac_sha1
 sss_password_encrypt
 sss_password_decrypt

test_encrypt_decrypt now expects EOK from libcrypto.
test_hmac_sha1 now expects EOK from libcrypto.
Added test_base64_encode to test base64 encoding implementation.
Added test_base64_decode to test base64 decoding implementation.

Signed-off-by: George McCollister <George.McCollister@gmail.com>

This patch fixes an issue which resulted in a need to initialize
responder with data from local domain, otherwise it would not correctly
detect requests for subdomains. Similar situation can occur if new
subdomain is added at runtime.

The solution is to ask for a list of subdomains in case there is a
candidate domain identified in the process of matching re_expressions
with given name.

The recent fixes for per-domain parsing can cause a segfault in
the netgroup processing if the domain isn't set to NULL when it's
parsed as "any domain".

https://fedorahosted.org/sssd/ticket/1383

 * These are common lines of debug output when starting
   up sssd

https://bugzilla.redhat.com/show_bug.cgi?id=811113

We can't support the DIR cache features in systems with kerberos
libraries older than 1.10. Make sure we don't build it on those
systems.

Passing Kerberos context to sss_krb5_get_error_message will allow us to
get better error messages.