cns.c:

cns.c:
	Declare blocking_hook_proc with __export keyword so that it
	  works with Win16.  Win32 will only generate a warning message.
	Reworked timeout logic to accomodate the 49.7 day wraparound
	  of GetTickCount()

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@9813 dc483132-0cff-0310-8789-dd5450dbe970