MediaWiki is licensed under GPL so we should really add the header to
our PHP code unless reusing code licensed differently.
Tested using:
ack-grep --php -L 'This program is free software' \
includes/ maintenance/ mw-config/ resources/ skins/
Output the following files:
includes/ExternalEdit.php (public domain)
Various other licenses:
includes/json/Services_JSON.php
includes/libs/CSSMin.php
includes/libs/IEContentAnalyzer.php
includes/libs/JavaScriptMinifier.php
includes/libs/jsminplus.php
includes/normal/Utf8Case.php
includes/objectcache/MemcachedClient.php
File autogenerated from a GPL file and Unicode data:
includes/ZhConversion.php
A few lines coming from stack overflow:
maintenance/mwdoc-filter.php
Message files do not have any license :-/
Change-Id: I214a988edfa9e2dfcc762612a0f7d47eee8bcb74
