composer/composer — pull request #811 by Seldaek (2012-06-19 21:35:38+00:00)
Title: Automatically generate classmaps for all PSR-0 packages to speed things up

According to https://github.com/Seldaek/autoload-bench and other sources classmap is so much faster that it's worth generating it always. This is a bit slow though. Caching should probably be added before merging this PR.