Add native Windows binary for bison.

bison/src/bison/2.4.1/bison-2.4.1-src/Makefile.am

+## Process this file with automake to produce Makefile.in -*-Makefile-*-
+## Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
+## Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+ACLOCAL_AMFLAGS = -I m4
+
+SUBDIRS = build-aux po runtime-po lib data src doc examples tests etc
+
+# Files installed for use by Automake.
+aclocaldir = @aclocaldir@
+aclocal_DATA = m4/bison-i18n.m4
+
+EXTRA_DIST = .prev-version .version cfg.mk maint.mk \
+  OChangeLog PACKAGING \
+  djgpp/Makefile.maint djgpp/README.in djgpp/config.bat \
+  djgpp/config.sed djgpp/config.site djgpp/config_h.sed \
+  djgpp/subpipe.c djgpp/subpipe.h djgpp/djunpack.bat \
+  djgpp/fnchange.lst djgpp/testsuite.sed
+
+
+.PHONY: maintainer-check
+maintainer-check:
+        cd tests && $(MAKE) $(AM_MAKEFLAGS) $@
+
+.PHONY: maintainer-push-check
+maintainer-push-check:
+        cd tests && $(MAKE) $(AM_MAKEFLAGS) $@
+
+.PHONY: maintainer-xml-check
+maintainer-xml-check:
+        cd tests && $(MAKE) $(AM_MAKEFLAGS) $@
+
+# See comments in build-aux/git-version-gen.  However, we make .version depend
+# on configure so that .version and VERSION/PACKAGE_VERSION stay in sync in the
+# working copy (for example, when you run autoreconf && make).  Allowing these
+# to fall out of sync appears to have little potential to improve Bison build
+# efficiency (even if we were to replace VERSION/PACKAGE_VERSION with .version
+# everywhere possible).  On the other hand, it could be harmful.  For example,
+# a developer might naively reference .version in a test case while the bison
+# executable still compiles with VERSION, and so the test case might fail or
+# pass incorrectly.
+BUILT_SOURCES = $(top_srcdir)/.version
+$(top_srcdir)/.version: configure
+        echo $(VERSION) > $@-t && mv $@-t $@
+dist-hook:
+        echo $(VERSION) > $(distdir)/.tarball-version