Dont double load class
Dont double load class

If the class already exists we should not load it twice. Since the composer autoloader is also used in core this could otherwise load a file twice.

This leads to problems otherwise with case insensitive operating systems like OS X. We can get rid of this once all file names in OC follow PSR-4, until then we probably need this check.

pixelipo/server,andreas-p/nextcloud-server,cernbox/core,bluelml/core,pollopolea/core,pmattern/server,cernbox/core,IljaN/core,whitekiba/server,whitekiba/server,cernbox/core,xx621998xx/server,sharidas/core,pixelipo/server,xx621998xx/server,owncloud/core,Ardinis/server,xx621998xx/server,sharidas/core,bluelml/core,michaelletzgus/nextcloud-server,michaelletzgus/nextcloud-server,pmattern/server,andreas-p/nextcloud-server,pollopolea/core,sharidas/core,whitekiba/server,nextcloud/server,endsguy/server,pixelipo/server,andreas-p/nextcloud-server,endsguy/server,pixelipo/server,cernbox/core,jbicha/server,jbicha/server,Ardinis/server,andreas-p/nextcloud-server,xx621998xx/server,IljaN/core,endsguy/server,bluelml/core,xx621998xx/server,jbicha/server,Ardinis/server,pmattern/server,endsguy/server,pollopolea/core,pollopolea/core,IljaN/core,owncloud/core,andreas-p/nextcloud-server,jbicha/server,owncloud/core,whitekiba/server,bluelml/core,pollopolea/core,michaelletzgus/nextcloud-server,Ardinis/server,pmattern/server,IljaN/core,Ardinis/server,pmattern/server,sharidas/core,cernbox/core,sharidas/core,IljaN/core,pixelipo/server,michaelletzgus/nextcloud-server,owncloud/core,bluelml/core,nextcloud/server,whitekiba/server,owncloud/core,endsguy/server,jbicha/server,nextcloud/server,phil-davis/core,nextcloud/server