net-p2p/btpd: Move man pages to share/man

Approved by:	portmgr (blanket)

net-p2p/btpd/Makefile

 PORTNAME=	btpd
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.16
-PORTREVISION=	3
+PORTREVISION=	4
 CATEGORIES=	net-p2p
 
 MAINTAINER=	mat@FreeBSD.org
@@ -20,6 +20,7 @@ USE_GITHUB=	yes
 USE_RC_SUBR=	btpd
 
 GNU_CONFIGURE=	yes
+GNU_CONFIGURE_MANPREFIX=	${PREFIX}/share
 CONFIGURE_ARGS=	--with-openssl=${OPENSSLBASE}
 
 OPTIONS_DEFINE=	DOCS

net-p2p/btpd/pkg-plist

 bin/btcli
 bin/btinfo
 bin/btpd
-man/man1/btcli.1.gz
-man/man1/btinfo.1.gz
-man/man1/btpd.1.gz
 %%PORTDOCS%%%%DOCSDIR%%/README
+share/man/man1/btcli.1.gz
+share/man/man1/btinfo.1.gz
+share/man/man1/btpd.1.gz