I contacted Michael Kay, the creator of Saxon, and asked him if he would be willing to re-license Saxon under MPL 1.1 (or any license acceptable to the Apache Foundation). He wrote back:
"The Saxon license was originally issued under the joint names of International Computers Limited and myself. I don't think it can be changed without getting ICL (now part of Fujitsu) involved, and I don't think it's likely I will be able to find anyone there who is interested." Saxon's conditions.html file supports his statement.
