Made the following changes:

- Use host name specified in ObtainAuthToken call instead of the
    normalized host name to connect to the ATS to avoid problems
    when the host name obtained through a reverse DNS lookup fails
    to resolve via a forward DNS lookup.

  - Added the capability log debug messages to a file.

  - Added method to the ConfigIf to free memory returned by calls to
    getEntryValue to avoid issues related to freeing memory allocated
    with a heap different than the one owned by the library freeing
    the memory.

CASA-auth-token/client/library/mechanisms/krb5/util.c

@@ -32,8 +32,9 @@
 
 //===[ Global variables ]==================================================
 
-// Debug Level
-int   DebugLevel = 0;
+// Debug Level and debug log file path.
+int   KrbMechDebugLevel = 0;
+char  *pKrbMechDebugLogFilePath = NULL;
 
 // Tables for Base64 encoding and decoding
 static const int8_t  g_Base64[] =
@@ -318,7 +319,6 @@ dtoul(
       }
       else
       {
-         DbgTrace(0, "-dtoul- Found invalid digit\n", 0);
          break;
       }
    }