Add CCP support to xrdp

This allows sesexec to send a reason for a connection close
request to xrdp.

xrdp is also updated to support server initiated disconnection sequences
from [MS-RDPBCGR] 1.3.1.4, along with reporting a reason to the client
for the disconnection.

libipm/ccp_application_types.c

@@ -43,6 +43,8 @@ ccp_close_reason_to_str(enum ccp_close_reason_type n,
         ? "Another connection was made to the session" :
         (n == CCP_CLOSE_LOGOFF_BY_USER)
         ? "The user logged out of the session" :
+        (n == CCP_CLOSE_SOFTWARE_FAILURE)
+        ? "A software failure has occurred" :
         /* Default */ NULL;
 
     if (str == NULL)

libipm/ccp_application_types.h

@@ -35,7 +35,8 @@ enum ccp_close_reason_type
 {
     CCP_CLOSE_RPC_INITIATED_DISCONNECT = 1,
     CCP_CLOSE_DISCONNECTED_BY_OTHERCONNECTION,
-    CCP_CLOSE_LOGOFF_BY_USER
+    CCP_CLOSE_LOGOFF_BY_USER,
+    CCP_CLOSE_SOFTWARE_FAILURE
 };
 
 /**