Added use of OpenGL 4.1 profile token on OS X.

Fixes #395.

README.md

@@ -107,6 +107,7 @@ GLFW bundles a number of dependencies in the `deps/` directory.
                    bit field was unchanged
  - [Cocoa] Bugfix: Joystick enumeration took hundreds of ms on some systems
  - [Cocoa] Bugfix: The cursor was hidden when the user resized a GLFW window
+ - [Cocoa] Bugfix: The 10.10 Yosemite OpenGL 4.1 profile token was not used
  - [Win32] Enabled generation of pkg-config file for MinGW
  - [Win32] Removed option to require explicitly linking against `winmm.dll`
  - [Win32] Bugfix: Failure to load winmm or its functions was not reported to

src/nsgl_context.m

@@ -127,12 +127,20 @@ int _glfwCreateContext(_GLFWwindow* window,
     ADD_ATTR(NSOpenGLPFAClosestPolicy);
 
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
-    if (ctxconfig->major > 2)
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101000
+    if (ctxconfig->major >= 4)
     {
-        ADD_ATTR2(NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion3_2Core);
+        ADD_ATTR2(NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion4_1Core);
     }
     else
 #endif /*MAC_OS_X_VERSION_MAX_ALLOWED*/
+    if (ctxconfig->major >= 3)
+    {
+        ADD_ATTR2(NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion3_2Core);
+    }
+#endif /*MAC_OS_X_VERSION_MAX_ALLOWED*/
+
+    if (ctxconfig->major <= 2)
     {
         if (fbconfig->auxBuffers != GLFW_DONT_CARE)
             ADD_ATTR2(NSOpenGLPFAAuxBuffers, fbconfig->auxBuffers);