spamassassin: fixed to use frameworks automatic perl build handling

mail/spamassassin/spamassassin.conf

@@ -2,6 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../spamassassin/spamassassin.conf
+# Copyright (C) 2011 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2003 Clifford Wolf
 #
@@ -17,4 +18,6 @@
 runconf=0
 
 sysconfdir=/etc/spamassassin
-hook_add premake 3 "perl Makefile.PL CONFDIR=$sysconfdir ENABLE_SSL=yes"
+var_append plconfopt ' ' "CONFDIR=$sysconfdir"
+
+var_append plconfopt ' ' "ENABLE_SSL=yes"