misc/gwhich: the port had been updated to the latest version 2.23

Garbage-collect GNU_CONFIGURE_MANPREFIX and no longer useful patch
(build logs show that -MD flag is used by default), define missing
LICENSE (GPLv3 or later).

Reported by:	portscout

misc/gwhich/Makefile

@@ -1,6 +1,5 @@
 PORTNAME=	gwhich
-PORTVERSION=	2.21
-PORTREVISION=	1
+PORTVERSION=	2.23
 CATEGORIES=	misc
 MASTER_SITES=	GNU/which
 DISTNAME=	which-${PORTVERSION}
@@ -9,8 +8,9 @@ MAINTAINER=	danfe@FreeBSD.org
 COMMENT=	GNU Which - Everything you never wanted in a which
 WWW=		https://savannah.gnu.org/projects/which/
 
+LICENSE=	GPLv3+
+
 GNU_CONFIGURE=	yes
-GNU_CONFIGURE_MANPREFIX=	${PREFIX}/share
 CONFIGURE_ARGS=	--program-prefix=g
 
 INFO=		which

misc/gwhich/distinfo

@@ -1,2 +1,3 @@
-SHA256 (which-2.21.tar.gz) = f4a245b94124b377d8b49646bf421f9155d36aa7614b6ebf83705d3ffc76eaad
-SIZE (which-2.21.tar.gz) = 149305
+TIMESTAMP = 1738436283
+SHA256 (which-2.23.tar.gz) = a2c558226fc4d9e4ce331bd2fd3c3f17f955115d2c00e447618a4ef9978a2a73
+SIZE (which-2.23.tar.gz) = 201930

misc/gwhich/files/patch-depcomp

@@ -1,11 +0,0 @@
---- depcomp.orig	2012-09-11 08:57:17.000000000 +0200
-+++ depcomp	2012-09-11 08:57:24.000000000 +0200
-@@ -98,7 +98,7 @@
-   done
-   
-   # Generate dependency file.
--  "$@" -MT "$object" -M -MF "$tmpdepfile"
-+  "$@" -MT "$object" -MD -MF "$tmpdepfile"
-   stat=$?
-   if test $stat -eq 0; then :
-   else