make timestamp granularity

[Edgar Fuß <ef%math.uni-bonn.de@localhost>]

Yes, I could read the code, but probably someone knows the answer off the top 
of his head:
It appears to me that make(1) compares timestamp only to seconds granularity.
Is that true?
Iff true, is this a feature?

I'm trying to do something like

stamp:
	touch ${.TARGET}

target: stamp source
	...

and this (after removing stamp and target) re-creates both as expected,
but if you do
	rm stamp; touch target && make target
it re-creates stamp, but not target.