move remaining stuff from testcode/lib/ one level up to testcode/

testcode/stroserror-test.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include <string.h>
+#include <conio.h>
+
+
+int main (void)
+{
+    unsigned char error = 0;
+    unsigned char line = 0;
+    unsigned char maxx, maxy;
+    screensize (&maxx, &maxy);
+    do {
+        printf ("%2d: %s\n", error, _stroserror (error));
+        if (line == maxy-3) {
+            printf ("Press any key...\n");
+            if (cgetc () == 'q') {
+                return 0;
+            }
+            clrscr ();
+            line = 0;
+        } else {
+            ++line;
+        }
+        ++error;
+    } while (error != 0);
+
+    return 0;
+}
+
+
+