New features to popfile.sh startup script, including:

- The default working directory can be tweaked by user; if
	  POPFILE_USER variable is defined before, use it simply.
	- If POPFILE_USER variable is not defined, the script default
	  is either ${HOME}/.popfile (old default) or /var/db/popfile
	  if ${HOME} variable is not defined or defined as null string.
	- If ${POPFILE_USER} directory cannot be made, exit with error.

Most casual users shouldn't affect this change, however, the script
itself is changed, so bump PORTREVISION.

Inspired from: http://home.jp.freebsd.org/cgi-bin/showmail/ports-jp/14635
               (in Japanese)

mail/popfile/Makefile

@@ -7,7 +7,7 @@
 
 PORTNAME=	popfile
 PORTVERSION=	0.21.1
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	mail
 MASTER_SITES=	${MASTER_SITE_SOURCEFORGE}
 MASTER_SITE_SUBDIR=	${PORTNAME}

mail/popfile/files/popfile.sh

@@ -2,9 +2,24 @@
 #
 # $FreeBSD$
 #
-export POPFILE_ROOT=%%DATADIR%%
-export POPFILE_USER=${HOME}/.popfile
+case "${HOME}" in
+"")
+	export POPFILE_USER_DEFAULT=/var/db/popfile
+	;;
+*)
+	export POPFILE_USER_DEFAULT=${HOME}/.popfile
+	;;
+esac
 
-mkdir -p ${POPFILE_USER}
+die()
+{
+	echo "$1"
+	exit 1
+}
+
+export POPFILE_ROOT=%%DATADIR%%
+export POPFILE_USER=${POPFILE_USER:-${POPFILE_USER_DEFAULT}}
+
+mkdir -p ${POPFILE_USER} || die "mkdir ${POPFILE_USER} failed"
 cd ${POPFILE_USER}
 %%DATADIR%%/popfile.pl >/dev/null 2>&1 &