Oops, in case FLTK *hasn't* been patched, still need <FL/x.H> and <GL/glx.h>

for X-specific stereo code.

src/partiviewc.cc

@@ -20,6 +20,14 @@
 
 #include <FL/glut.H>	/* for GLUT_STEREO if FLTK knows it */
 
+#ifndef GLUT_STEREO
+# if unix
+#  include <FL/x.H>	/* otherwise, need GLX symbols for X-specific stereo */
+#  include <GL/glx.h>
+# endif
+#endif
+
+
 #include <ctype.h>
 #undef isspace		/* hack for irix 6.5 */