EllisLab/CodeIgniter — pull request #2575 by wmh (2013-08-01 15:20:54+00:00)
Title: Add windows filename rule as an option for upload files

In our case, we build cloud file platform for users to upload their files and we will try to keep their original file name. That's why we add a new filename rule as same as windows' and make it an option for CI Upload library.