Change debug files from ergonomadic -> oragono

.gitignore

 /oragono
 /build/*
 _test
+oragono.prof
+oragono.mprof

irc/debug.go

 		client.Notice(fmt.Sprintf("num goroutines: %d", count))
 
 	case "PROFILEHEAP":
-		profFile := "ergonomadic.mprof"
+		profFile := "oragono.mprof"
 		file, err := os.Create(profFile)
 		if err != nil {
 			client.Notice(fmt.Sprintf("error: %s", err))
 		client.Notice(fmt.Sprintf("written to %s", profFile))
 
 	case "STARTCPUPROFILE":
-		profFile := "ergonomadic.prof"
+		profFile := "oragono.prof"
 		file, err := os.Create(profFile)
 		if err != nil {
 			client.Notice(fmt.Sprintf("error: %s", err))