restructure compilation to compile wrapper code separately

Author: andrew-taylor

README.md

@@ -260,7 +260,8 @@ Install by creating a symbolic link, e.g.:
 sudo ln  -sf dcc /usr/local/bin/dcc++
 ```
 
-Running dual-sanitizers is not currently supported for C++.
+A significant limitation is that running dual-sanitizers is not currently supported for the 
+ `iostream` library which is commonly used in novice programs.
 
 
 # Run-time Error Handling Implementation

compile_time_python/__main__.py

@@ -1,4 +1,4 @@
-from compile import compile_user_program
+from compile import main
 
 if __name__ == "__main__":
-    compile_user_program()
+    main()