(bug 26280) all files should have GPL header
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