[bug] duplicate bindings in environment

[scolsen]

C:\Users\marti\tmp\Carp>carp examples\game_of_life.carp -x
I encountered an error when emitting code:

I found an ambiguous symbol set-render-draw-color at line 52, column 8 in 'C:/Users/marti/tmp/Carp/examples/game_of_life.carp'

Possibilities:
SDL.set-render-draw-color
SDL.set-render-draw-color
SDL.set-render-draw-color
SDL.set-render-draw-color

All possibilities have the correct type.

Traceback:
(build) at Compiler (Build & Run):1:5.
(do (build) (run)) at Compiler (Build & Run):1:1.

[hellerve]

The example game_of_life.carp seems to use SDL submodules multiple times:

Carp/examples/game_of_life.carp

Lines 9 to 14 in ca5774b

	(use SDL)
	(use SDLApp)
	(use SDL.Event)
	(use SDL.Keycode)
	(use SDL.Mouse)
	(use SDL.MouseState)

This seems to lead to duplicate symbols being part of the environment.

[MatthewHannigan]

FWIW commenting out (use SDLApp) doesn't change the behaviour at all. Same error message.