[linux-cifs-client] Patch to get cifs.upcall to compile with Heimdal

[Torsten Kurbad]

Hi Jeff,

I now split up the patches and reintroduced the first variant for
krb5.h inclusion.

Best regards,
Torsten
-- 
  Hegel was right when he said that we learn from history that man
  can never learn anything from history. -George Bernard Shaw