[gobject-introspection] Only accept bison as yacc tool

[Colin Walters <walters src gnome org>]

commit 14aa104cc501239eeb772ea83e887d7a30f8fce7
Author: Colin Walters <walters verbum org>
Date:   Wed Aug 5 14:40:06 2009 -0400

    Only accept bison as yacc tool
    
    Others like byacc barf on some of the directives like %error-verbose.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index d8ab968..e704b7f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -41,7 +41,7 @@ if test "$LEX" = :; then
 	AC_MSG_ERROR([flex not found but required])
 fi
 
-AC_CHECK_PROGS(YACC, 'bison -y' byacc yacc, :)
+AC_CHECK_PROGS(YACC, 'bison -y', :)
 if test "$YACC" = :; then
 	AC_MSG_ERROR([bison not found but required])
 fi