Do not try to load the GLUT library in the ctypes tests. This test

adds little value, but has a large problem on OS X, as explained in
SF# 1581906.

Lib/ctypes/test/test_find.py

@@ -7,25 +7,21 @@ from ctypes.test import is_resource_enabled
 if sys.platform == "win32":
     lib_gl = find_library("OpenGL32")
     lib_glu = find_library("Glu32")
-    lib_glut = find_library("glut32")
     lib_gle = None
 elif sys.platform == "darwin":
     lib_gl = lib_glu = find_library("OpenGL")
-    lib_glut = find_library("GLUT")
     lib_gle = None
 else:
     lib_gl = find_library("GL")
     lib_glu = find_library("GLU")
-    lib_glut = find_library("glut")
     lib_gle = find_library("gle")
 
 ## print, for debugging
 if is_resource_enabled("printing"):
-    if lib_gl or lib_glu or lib_glut or lib_gle:
+    if lib_gl or lib_glu or lib_gle:
         print "OpenGL libraries:"
         for item in (("GL", lib_gl),
                      ("GLU", lib_glu),
-                     ("glut", lib_glut),
                      ("gle", lib_gle)):
             print "\t", item
 
@@ -33,24 +29,11 @@ if is_resource_enabled("printing"):
 # On some systems, loading the OpenGL libraries needs the RTLD_GLOBAL mode.
 class Test_OpenGL_libs(unittest.TestCase):
     def setUp(self):
-        self.gl = self.glu = self.gle = self.glut = None
+        self.gl = self.glu = self.gle = None
         if lib_gl:
             self.gl = CDLL(lib_gl, mode=RTLD_GLOBAL)
         if lib_glu:
             self.glu = CDLL(lib_glu, RTLD_GLOBAL)
-        if lib_glut:
-            # On some systems, additional libraries seem to be
-            # required, loading glut fails with
-            # "OSError: /usr/lib/libglut.so.3: undefined symbol: XGetExtensionVersion"
-            # I cannot figure out how to repair the test on these
-            # systems (red hat), so we ignore it when the glut or gle
-            # libraries cannot be loaded.  See also:
-            # https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1478253&group_id=5470
-            # http://mail.python.org/pipermail/python-dev/2006-May/064789.html
-            try:
-                self.glut = CDLL(lib_glut)
-            except OSError:
-                pass
         if lib_gle:
             try:
                 self.gle = CDLL(lib_gle)
@@ -67,11 +50,6 @@ class Test_OpenGL_libs(unittest.TestCase):
             if self.glu:
                 self.glu.gluBeginCurve
 
-    if lib_glut:
-        def test_glut(self):
-            if self.glut:
-                self.glut.glutWireTetrahedron
-
     if lib_gle:
         def test_gle(self):
             if self.gle: