add old dbm-compatible interface from db-1.86 with minor changes by me (needs a man page)

src/include/Makefile

@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.58 1999/02/01 22:59:15 d Exp $
+#	$OpenBSD: Makefile,v 1.59 1999/02/12 04:46:27 millert Exp $
 #	$NetBSD: Makefile,v 1.59 1996/05/15 21:36:43 jtc Exp $
 
 #	@(#)Makefile	5.45.1.1 (Berkeley) 5/6/91
@@ -9,7 +9,7 @@
 # Missing: mp.h
 
 FILES=	a.out.h ar.h assert.h bitstring.h blf.h bm.h cast.h cpio.h ctype.h \
-	curses.h db.h des.h dirent.h disktab.h elf_abi.h err.h fnmatch.h \
+	curses.h db.h dbm.h des.h dirent.h disktab.h elf_abi.h err.h fnmatch.h \
 	fstab.h fts.h glob.h grp.h ieeefp.h inttypes.h iso646.h kvm.h \
 	langinfo.h libgen.h limits.h locale.h malloc.h math.h md4.h md5.h \
 	memory.h mpool.h ndbm.h netdb.h netgroup.h nlist.h nl_types.h \

src/include/dbm.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 1999 Todd C. Miller <Todd.Miller@courtesan.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _DBM_H_
+#define _DBM_H_
+
+#include <ndbm.h>
+
+__BEGIN_DECLS
+int	dbmclose __P((void));
+int	dbminit __P((char *));
+int	delete __P((datum));
+datum	fetch __P((datum));
+datum	firstkey __P((void));
+datum	nextkey __P((datum));
+int	store __P((datum, datum));
+__END_DECLS
+
+#endif /* _DBM_H_ */