Mac OS fixes for general tests.

Include GLUT/glut.h instead of GL/glut.h on Mac OS. All the general
tests compile and run on Mac OS with this patch.

tests/general/linestipple.c

@@ -31,7 +31,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
+#if defined(__APPLE__)
+#include <GLUT/glut.h>
+#else
 #include <GL/glut.h>
+#endif
 
 #include "piglit-util.h"
 

tests/general/occlusion_query.c

@@ -34,7 +34,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <GL/glew.h>
+#if defined(__APPLE__)
+#include <GLUT/glut.h>
+#else
 #include <GL/glut.h>
+#endif
 
 #include "piglit-util.h"
 

tests/general/texgen.c

@@ -31,7 +31,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
+#if defined(__APPLE__)
+#include <GLUT/glut.h>
+#else
 #include <GL/glut.h>
+#endif
 
 #include "piglit-util.h"
 

tests/general/varray-disabled.c

@@ -39,7 +39,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
+#if defined(__APPLE__)
+#include <GLUT/glut.h>
+#else
 #include <GL/glut.h>
+#endif
 
 #include "piglit-util.h"
 

tests/general/windowoverlap.c

@@ -35,7 +35,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
+#if defined(__APPLE__)
+#include <GLUT/glut.h>
+#else
 #include <GL/glut.h>
+#endif
 
 #include "piglit-util.h"