Solve -cc conflict in imagecopy
Solve -cc conflict in imagecopy

imagecopy.py did not support its -cc option because it conflicted with
the global option to toggle cosmetic changes
Renamed the local implementation and added option descriptions

Bug: T182522
Change-Id: I2db4e4ffa313ff3cc043658b3ca3d6d436d65a5b

wikimedia/pywikibot-core,wikimedia/pywikibot-core,PersianWikipedia/pywikibot-core,magul/pywikibot-core,magul/pywikibot-core