Adds unit test for glfwGetProcAddress.

src/deps_info.json

@@ -3,7 +3,7 @@
   "SDL_Init": ["malloc", "free"],
   "SDL_GL_GetProcAddress": ["emscripten_GetProcAddress"],
   "eglGetProcAddress": ["emscripten_GetProcAddress"],
-  "glfwGetProcAddress": ["emscripten_GetProcAddress"],
+  "glfwGetProcAddress": ["emscripten_GetProcAddress", "strstr"],
   "emscripten_GetProcAddress": ["strstr"]
 }
 

tests/glfw.c

@@ -376,6 +376,10 @@ void PullInfo(){
   extension = "GL_EXT_framebuffer_object";
   printf("'%s' extension is %s.\n", extension, glfwExtensionSupported(extension) ? "supported" : "not supported");
   
+  extension = "glBindBuffer";
+  void* proc_addr = glfwGetProcAddress(extension);
+  printf("'%s' extension proc address is %p.\n", extension, proc_addr);
+  
   printf("Sleeping 1 sec...\n");
   glfwSleep(1);
   printf("...Done.\n");