System/system name clash on windows
Imported from http://bugzilla.roxen.com/bugzilla/show_bug.cgi?id=2674
Reported by Martin Nilsson, IDA nilsson@pike.ida.liu.se
The module system.pmod and System.pmod clashes on OS with case-insensitive file systems. The contents are the same, so moving system.pmod to a compatibility directory should solve the problem.