Cleanup

This is an extract of a commit, minimally edited to ensure it compiles.

Closes #1078.
Related to #197.

include/GLFW/glfw3.h

@@ -787,7 +787,6 @@ extern "C" {
  *  Cursor centering [window hint](@ref GLFW_CENTER_CURSOR_hint).
  */
 #define GLFW_CENTER_CURSOR          0x00020009
-#define GLFW_TRANSPARENT            0x0002000A
 
 /*! @brief Framebuffer bit depth hint.
  *
@@ -869,6 +868,12 @@ extern "C" {
  *  Framebuffer double buffering [hint](@ref GLFW_DOUBLEBUFFER).
  */
 #define GLFW_DOUBLEBUFFER           0x00021010
+/*! @brief Framebuffer transparency hint.
+ *
+ *  Framebuffer transparency [hint](@ref GLFW_TRANSPARENT_hint).
+ */
+#define GLFW_TRANSPARENT            0x00021011
+
 /*! @brief Context client API hint and attribute.
  *
  *  Context client API [hint](@ref GLFW_CLIENT_API_hint) and