Renamed "Disk" to "Storage"

Makefile

@@ -1,7 +1,7 @@
 build:
 	mkdir -p out
 	make --quiet -C Input build
-	make --quiet -C Disk build
+	make --quiet -C Storage build
 	make --quiet -C Audio build
 	make --quiet -C FileSystem build
 	make --quiet -C Generic build
@@ -14,7 +14,7 @@ prepare:
 clean:
 	rm -rf out
 	make -C Input clean
-	make -C Disk clean
+	make -C Storage clean
 	make -C Audio clean
 	make -C FileSystem clean
 	make -C Generic clean