added even more stubs

c64/kernal/stubs/e716.chrout_screen.s

@@ -0,0 +1,4 @@
+
+// Screen CHROUT
+
+	STUB_IMPLEMENTATION()

c64/kernal/stubs/e716.interop

@@ -0,0 +1,3 @@
+
+This routine is called at least by the Final Cartridge III. See:
+- https://github.com/mist64/final_cartridge/blob/master/core/kernal_c64.i

c64/kernal/stubs/e96c.insert_line_at_top.s

@@ -0,0 +1,4 @@
+
+// Insert line at top of screen
+
+	STUB_IMPLEMENTATION()

c64/kernal/stubs/e96c.interop

@@ -0,0 +1,3 @@
+
+This routine is called at least by the Final Cartridge III. See:
+- https://github.com/mist64/final_cartridge/blob/master/core/kernal_c64.i

c64/kernal/stubs/f646.iec_close.s

@@ -0,0 +1,5 @@
+
+
+// IEC close
+
+	STUB_IMPLEMENTATION()

c64/kernal/stubs/f646.interop

@@ -0,0 +1,3 @@
+
+This routine is called at least by the Final Cartridge III. See:
+- https://github.com/mist64/final_cartridge/blob/master/core/kernal_c64.i