Moved glext headers to separate directory for clarity.

src/CMakeLists.txt

@@ -20,7 +20,8 @@ endif(UNIX)
 include_directories(${CMAKE_CURRENT_SOURCE_DIR} 
                     ${GLFW_SOURCE_DIR}/src
                     ${GLFW_BINARY_DIR}/src
-                    ${GLFW_INCLUDE_DIR})
+                    ${GLFW_INCLUDE_DIR}
+                    ${GLFW_SOURCE_DIR}/support)
 
 set(common_SOURCES enable.c error.c fullscreen.c gamma.c init.c input.c
                    joystick.c opengl.c time.c window.c)