[development] Modules that integrate non-GPL PHP apps violate the GPL.

[Karoly Negyesi]

> If GPL programs do exist in windows (and mac) environments it is 
> fairly obvious that use API of differently-licensed applications... 
> or they write pixels directly in the graphic card and sectors 
> directly in the hard disk?

The difference here could be that these are compiled programs and DLLs... could be different legalese than a script lang like PHP.