nmap: set LUA_VERSIONS_ACCEPTED to avoid using internal Lua provided by nmap

Without that change the nmap configure script checks for `lua_isyield'
symbol (appeared on Lua 5.3), and for LUA_VERSION_DEFAULT != 53
(pkgsrc by default set LUA_VERSION_DEFAULT to 52) it will just
silently use its internal version.

Set LUA_VERSIONS_ACCEPTED to 53 to avoid that.

Should fix PR pkg/52624 reported by Patrick Mackey.
Bump PKGREVISION.

Index: Makefile
===================================================================
RCS file: /cvsroot/pkgsrc/net/nmap/Makefile,v
retrieving revision 1.136
diff -u -p -r1.136 Makefile
--- Makefile	3 Aug 2017 13:52:00 -0000	1.136
+++ Makefile	19 Oct 2017 09:56:43 -0000
@@ -1,6 +1,7 @@
 # $NetBSD: Makefile,v 1.136 2017/08/03 13:52:00 adam Exp $
 
 DISTNAME=	nmap-7.60
+PKGREVISION=	1
 CATEGORIES=	net security
 MASTER_SITES=	http://nmap.org/dist/
 EXTRACT_SUFX=	.tar.bz2
Index: options.mk
===================================================================
RCS file: /cvsroot/pkgsrc/net/nmap/options.mk,v
retrieving revision 1.18
diff -u -p -r1.18 options.mk
--- options.mk	1 Jan 2017 14:43:50 -0000	1.18
+++ options.mk	19 Oct 2017 09:56:43 -0000
@@ -37,6 +37,7 @@ CONFIGURE_ARGS+=	--without-zenmap
 .endif
 
 .if !empty(PKG_OPTIONS:Mlua)
+LUA_VERSIONS_ACCEPTED=	53	# needs lua_isyieldable, introduced in Lua 5.3
 .include "../../lang/lua/buildlink3.mk"
 CONFIGURE_ARGS+=	--with-liblua=${BUILDLINK_PREFIX.lua}
 PLIST.lua=		yes