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Binary releases may be bundled with dictionaries licensed under different terms than AL2. This was approved in the Legal Discuss JIRA. Dictionaries are packaged as independent extensions and are recognized to fall into the "mere aggregation" provision of the GPL licensehttp://www.gnu.org/licenses/gpl-faq.html#MereAggregation
Structure of LICENSE and NOTICE files
The LICENSE file lists the licenses applicable to the source release. Binary releases may contain category-b licensed components. The licenses of the in-tree category-b components that can only be explicitly requested are being collected in the file LICENSE_category_b file. Licenses of other components that can be distributed under a "mere aggregation" clause are collected in LICENSE_aggregated.
The NOTICE file shows provides the notices required by the individual licenses of the source release. Like the LICENSE file for binary builds there are corresponding NOTICE_category_b and NOTICE_aggregated files that are being provided for the convenience of re-distributors.