Add automake stuff.

Makefile.am

@@ -0,0 +1,18 @@
+PFILE = bison.simple
+PFILE1 = bison.hairy
+INCLUDES = -DXPFILE=\"$(datadir)/$(PFILE)\" \
+	   -DXPFILE1=\"$(datadir)/$(PFILE1)\"
+bin_PROGRAMS = bison
+bison_SOURCES = LR0.c allocate.c closure.c conflicts.c derives.c	\
+    files.c getargs.c gram.c lalr.c lex.c main.c nullable.c output.c	\
+    print.c reader.c reduce.c symtab.c warshall.c version.c getopt.c	\
+    getopt1.c
+EXTRA_bison_SOURCES = vmsgetargs.c
+bison_LDADD = @ALLOCA@
+noinst_HEADERS = files.h gram.h lex.h machine.h new.h state.h symtab.h	\
+    system.h types.h getopt.h
+data_DATA = $(PFILE) $(PFILE1)
+info_TEXINFOS = bison.texinfo
+man_MANS = bison.1
+EXTRA_DIST = $(PFILE) $(PFILE1) $(man_MANS)				\
+    REFERENCES configure.bat build.com bison.cld bison.rnh vmshlp.mar