[Cocoa] Fix deprecated SEL cast in sel_registerName (issue #3186)#3194

HeikoKlare wants to merge 1 commit intoeclipse-platform:mastereclipse-platform/eclipse.platform.swt:masterfrom

HeikoKlare:fix/replace-deprecated-sel-cast-in-sel-registerNameHeikoKlare/eclipse.platform.swt:fix/replace-deprecated-sel-cast-in-sel-registerNameCopy head branch name to clipboard