mid coding commit

core/startos/src/bins/deprecated.rs

@@ -0,0 +1,9 @@
+pub fn renamed(old: &str, new: &str) -> ! {
+    eprintln!("{old} has been renamed to {new}");
+    std::process::exit(1)
+}
+
+pub fn removed(name: &str) -> ! {
+    eprintln!("{name} has been removed");
+    std::process::exit(1)
+}