glean/fragprog: Do not require EXT_fog_coord

ARB_fragment_program only interacts with, but does not depend on
EXT_fog_coord, so simply skip the fog-related tests when the latter is
not present.

tests/glean/tfragprog1.h

 // BEGIN_COPYRIGHT -*- glean -*-
-// 
+//
 // Copyright (C) 1999  Allen Akin   All Rights Reserved.
-// 
+//
 // Permission is hereby granted, free of charge, to any person
 // obtaining a copy of this software and associated documentation
 // files (the "Software"), to deal in the Software without
@@ -10,11 +10,11 @@
 // sell copies of the Software, and to permit persons to whom the
 // Software is furnished to do so, subject to the following
 // conditions:
-// 
+//
 // The above copyright notice and this permission notice shall be
 // included in all copies or substantial portions of the
 // Software.
-// 
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
 // KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 // WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
@@ -23,7 +23,7 @@
 // AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
 // OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
-// 
+//
 // END_COPYRIGHT
 
 // tfragprog.h:  Test GL_ARB_fragment_program extension.
@@ -55,10 +55,14 @@ namespace GLEAN {
 class FragmentProgram
 {
 public:
+	enum {
+		NeedsFogCoord = 1
+	};
 	const char *name;
 	const char *progString;
 	GLfloat expectedColor[4];
 	GLfloat expectedZ;
+	uint flags;
 };