mail/esmtp: Fix build with libesmtp 1.1.0

mail/esmtp/Makefile

@@ -12,7 +12,8 @@ LICENSE=	GPLv2
 
 LIB_DEPENDS=	libesmtp.so:mail/libesmtp
 
-USES=		tar:bzip2 bison ssl
+USES=		bison pkgconfig ssl tar:bzip2
+
 GNU_CONFIGURE=	yes
 
 PORTDOCS=	README

mail/esmtp/files/patch-configure

@@ -0,0 +1,18 @@
+--- configure.orig	2009-12-24 08:19:09 UTC
++++ configure
+@@ -4343,12 +4343,12 @@ fi
+ fi
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for libESMTP" >&5
+ $as_echo_n "checking for libESMTP... " >&6; }
+-if libesmtp-config --version > /dev/null 2>&1
++if pkgconf libesmtp-1.0 > /dev/null 2>&1
+ then
+ 	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+ $as_echo "yes" >&6; }
+-	CFLAGS="$CFLAGS `libesmtp-config --cflags`"
+-	LIBS="$LIBS `libesmtp-config --libs`"
++	CFLAGS="$CFLAGS `pkgconf libesmtp-1.0 --cflags`"
++	LIBS="$LIBS `pkgconf libesmtp-1.0 --libs`"
+ else
+ 	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+ $as_echo "no" >&6; }