Add native Windows binary for bison.

bison/src/bison/2.4.1/bison-2.4.1-src/tests/bison.in

Index: bison/src/bison/2.4.1/bison-2.4.1-src/tests/bison.in
===================================================================
--- bison/src/bison/2.4.1/bison-2.4.1-src/tests/bison.in	(revision 0)
+++ bison/src/bison/2.4.1/bison-2.4.1-src/tests/bison.in	(revision 0)
@@ -0,0 +1,8 @@
+#! @SHELL@
+# @configure_input@
+# Wrapper around a non installed bison to make it work as an installed one.
+
+# Use the shipped files, not those installed.
+BISON_PKGDATADIR=$(cygpath -m '@abs_top_srcdir@/data')
+export BISON_PKGDATADIR
+exec $PREBISON $(cygpath -m '@abs_top_builddir@/src/bison') ${1+"$@"}