[allegrocl] Various fixes to the generated C wrapper code (enums, constants, function declarations), as I progress through the test-suite.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@10885 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/operator_overload.i

@@ -71,6 +71,12 @@ see bottom for a set of possible tests
 %rename(OrOperator) operator ||;
 #endif
 
+#ifdef SWIG_ALLEGRO_CL
+%{
+#include <stdio.h>
+%}
+#endif
+
 %rename(IntCast) operator int();
 %rename(DoubleCast) operator double();