pull up r19240 from trunk

pull up r19240 from trunk

 r19240@cathode-dark-space:  jaltman | 2007-03-21 00:48:09 -0400
 ticket: 5469

 	When using the Vista SDK version of NTSecAPI.h it is necessary
 	to ensure the _WIN32_WINNT have a value of 0x0501 or greater.
 	Otherwise, required LSA type declarations are undeclared.

 	Provide a registry value that can be set to turn on Application
 	Event log messages for debugging.

 	HKLM\System\CurrentControlSet\Services\MIT Kerberos\Network Provider
 		DWORD "Debug"

 	Ensure that KFW_obtain_user_temp_directory() returns a value on
 	error.

 	Correct the declaration of KFW_copy_cache_to_system_file()
 	to match the prototype.

ticket: 5469

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-6@19335 dc483132-0cff-0310-8789-dd5450dbe970