[I am not good at writing change logs... There are MUCH more changes which
 are simply not mentioned here.]

Apr 1 2003:
	Fixing bug in FD copy facility (incorrect treatment of poll's revents; 
	failure to pass them down via fdnotify2()). (ww)
	
Apr 6 2003:
	HTime enhancements (Div, GetLR, compare with Null and Invalid, 
	constructor with Null, preserve invalid across arithmetics). (WW)
