Follow-up to r1676: Implement serf__kerb_reset_sec_context() for Windows  SSPI.
Follow-up to r1676: Implement serf__kerb_reset_sec_context() for Windows 
SSPI.

* auth/auth_kerb_sspi.c
  (serf__kerb_rese): Reset security context.

idomon/serf,TommyU/serf,liuzongquan/serf,Manouchehri/serf,TommyU/serf,Manouchehri/serf,TommyU/serf,wzugang/serf,sworda/serf,krime/serf,idomon/serf,Manouchehri/serf,krime/serf,blueszhangsh/serf,krime/serf,liuzongquan/serf,idomon/serf,justinweb/serf,muthusuba/serf,sworda/serf,justinweb/serf,idomon/serf,liuzongquan/serf,wzugang/serf,sworda/serf,justinweb/serf,muthusuba/serf,sworda/serf,justinweb/serf,krime/serf,blueszhangsh/serf,blueszhangsh/serf,muthusuba/serf,liuzongquan/serf,wzugang/serf,Manouchehri/serf,TommyU/serf,wzugang/serf,muthusuba/serf,blueszhangsh/serf