secur32: Gracefully handle ntlm_auth versions that don't support the new commands.

[Kai Blin]

---
 dlls/secur32/dispatcher.c |    5 ----
 dlls/secur32/ntlm.c       |   59 
+++++++++++++++++++++------------------------
 2 files changed, 28 insertions(+), 36 deletions(-)
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