Charles G. Waldman <cgw@fnal.gov>:
Add the EXTENDED_ARG opcode to the virtual machine, allowing 32-bit
arguments to opcodes instead of being forced to stick to the 16-bit
limit.  This is especially useful for machine-generated code, which
can be too long for the SET_LINENO parameter to fit into 16 bits.

This closes the implementation portion of SourceForge patch #100893.
diff --git a/Include/node.h b/Include/node.h
index affa8cd..96eb350 100644
--- a/Include/node.h
+++ b/Include/node.h
@@ -19,8 +19,8 @@
 typedef struct _node {
     short		n_type;
     char		*n_str;
-    short		n_lineno;
-    short		n_nchildren;
+    int			n_lineno;
+    int			n_nchildren;
     struct _node	*n_child;
 } node;