The "NOTICE" condition as written in the draft Apache licenses is not specifically restricted to notices "that refer to this License [the GPL]
and to the absence of any warranty"; accordingly, it's a stronger condition, and is GPL-incompatible.
... If the Work includes a
"NOTICE" file as part of its source code distribution, the
Derivative Work must include a readable copy of the notices
contained within that NOTICE file, excluding those notices
that only pertain to portions of the Work that have been
excluded from the Derivative Work, in ***at least one*** of the
following places: within a NOTICE file distributed as part of
the Derivative Work; ***within the source code or documentation,
if provided along with the Derivative Work**; ...
You may add Your own copyright statement to such modifications and
may provide (sublicense) additional or different license terms and
conditions for use, reproduction, distribution or further
modification of Your modifications, or for the Derivative Work as
a whole, provided that the sublicense complies with the conditions
stated in this License.The GPL-covered code within the Derivative Work can therefore be distributed
under the terms of the GPL, which by FSF definition makes it compatible.
....Roy
