PC-BSD/trueos 067a9a7usr.sbin/sendmail Makefile, usr.sbin/sendmail/confs Makefile

Add confs subdir to sendmail, this should ensure that the files
of /etc/mail get created and included in the OS-sendmail base package
going forward

This fixes #226
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+20-0usr.sbin/sendmail/confs/Makefile
+1-1usr.sbin/sendmail/Makefile
+21-12 files

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