oksh: update to 6.5

Note release version goes backwards. Version now follows openbsd version
numbering.

No changes available.
Patched to eliminate compilation warnings on netbsd.

shells/oksh/Makefile

@@ -1,16 +1,16 @@
-# $NetBSD: Makefile,v 1.1 2018/11/09 22:15:12 maya Exp $
+# $NetBSD: Makefile,v 1.2 2019/07/24 11:15:41 maya Exp $
 
-DISTNAME=	oksh-20181009
+DISTNAME=	oksh-6.5
 CATEGORIES=	shells
 MASTER_SITES=	${MASTER_SITE_GITHUB:=ibara/}
-GITHUB_TAG=	${PKGVERSION_NOREV}
+GITHUB_TAG=	${DISTNAME}
 
 MAINTAINER=	pkgsrc-users@NetBSD.org
 HOMEPAGE=	https://github.com/ibara/oksh/
 COMMENT=	Portable OpenBSD ksh(1)
 LICENSE=	original-bsd
 
-WRKSRC=		${WRKDIR}/${PKGNAME_NOREV}
+WRKSRC=		${WRKDIR}/oksh-${PKGNAME_NOREV}
 
 GNU_CONFIGURE=		yes
 

shells/oksh/distinfo

@@ -1,6 +1,8 @@
-$NetBSD: distinfo,v 1.1 2018/11/09 22:15:12 maya Exp $
+$NetBSD: distinfo,v 1.2 2019/07/24 11:15:41 maya Exp $
 
-SHA1 (oksh-20181009-20181009.tar.gz) = decc85574c362889f7f9eb74b1ae25eea0241f3c
-RMD160 (oksh-20181009-20181009.tar.gz) = d2c8217d9271ac9ac9ed1f10a2884fdc3ba537a1
-SHA512 (oksh-20181009-20181009.tar.gz) = ba4d5d00e5a45ed035da1e4129163e9043f84a662bd100972754fe330ee7811b8b448321d202e61a63b1cc36ceac8df005a17e1473ac842cb536b1e50122e29b
-Size (oksh-20181009-20181009.tar.gz) = 301271 bytes
+SHA1 (oksh-6.5.tar.gz) = 80ca09d09a430b70ad38d7b3098d642560f5323e
+RMD160 (oksh-6.5.tar.gz) = d774a686fc76f6671cc9d6be542c6d4f0afcd07c
+SHA512 (oksh-6.5.tar.gz) = 473fc21e829018d3dd2977ae2909d95488a0c8f7a293778fe1e73f8e047cf46da2e3afe4786e95ff650fc7d207da342e0b2a8f8ccd98aa5957765a25bb844f98
+Size (oksh-6.5.tar.gz) = 301894 bytes
+SHA1 (patch-io.c) = e231fe9fbef5df7f7a73facbedb0260134e8158c
+SHA1 (patch-portable.h) = 9b4cdc1511db6093a0fe24c101bd4491c5df2f49

shells/oksh/patches/patch-io.c

@@ -0,0 +1,12 @@
+$NetBSD: patch-io.c,v 1.1 2019/07/24 11:15:41 maya Exp $
+
+--- io.c.orig	2019-04-10 23:55:43.000000000 +0000
++++ io.c
+@@ -10,6 +10,7 @@
+ #include <errno.h>
+ #include <fcntl.h>
+ #include <string.h>
++#include <stdlib.h>
+ #include <unistd.h>
+ 
+ #include "sh.h"

shells/oksh/patches/patch-portable.h

@@ -0,0 +1,22 @@
+$NetBSD: patch-portable.h,v 1.1 2019/07/24 11:15:41 maya Exp $
+
+Avoid re-defining timespecsub on netbsd, that already has it.
+
+--- portable.h.orig	2019-04-10 23:55:43.000000000 +0000
++++ portable.h
+@@ -151,6 +151,7 @@
+             ((tsp)->tv_nsec cmp (usp)->tv_nsec) :                       \
+             ((tsp)->tv_sec cmp (usp)->tv_sec))
+ 
++#ifndef timespecsub
+ #define timespecsub(tsp, usp, vsp)                                      \
+         do {                                                            \
+                 (vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;          \
+@@ -160,6 +161,7 @@
+                         (vsp)->tv_nsec += 1000000000L;                  \
+                 }                                                       \
+         } while (0)
++#endif
+ #endif /* !__OpenBSD__ */
+ 
+ #if !defined(HAVE_ST_MTIM) && !defined(HAVE_ST_MTIMESPEC)