He wrote to gnucash-devel on 2010-08-28:
Much of the last batch code I contributed to gnucash was licensed
without the "or any later version" clause of the GPL boilerplate, and
thus specifically and only under version 2 of the GPL.
I hereby extend that to version 2 and/or version 3.
Any contribution I've made to gnucash which was under the GPLv2 only may
be considered to be under both v2 and v3.
git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@19507 57a11ea4-9604-0410-9ed3-97b8803252fd
