[committed] Remove compiler warnings in GLR parsers.

[Paul Hilfinger]

         * data/glr.c (yySymbol): Define as int to avoid compiler
           warnings
           about possible change of value.
---

diff --git a/data/glr.c b/data/glr.c
index 944c334..642b993 100644
--- a/data/glr.c
+++ b/data/glr.c
@@ -673,7 +673,7 @@ typedef int yyStateNum;
 typedef int yyRuleNum;
 
 /** Grammar symbol */
-typedef short int yySymbol;
+typedef int yySymbol;
 
 /** Item references, as in LALR(1) machine */
 typedef short int yyItemNum;
-- 
1.7.0.4