revert movement of qp bins to bin/

plugin dir, config dir, spool dir, all have different logic about where/how to find their config. The logic needs some untangling and unification before attempting this again.

run.forkserver

@@ -13,7 +13,7 @@ LANG=C
 exec 2>&1 \
 sh -c "
   exec $BIN/softlimit -m $MAXRAM   \
-    $PERL -T ./bin/qpsmtpd-forkserver  \
+    $PERL -T ./qpsmtpd-forkserver  \
       --listen-address $IP         \
       --port 25                    \
       --port 587                   \

run.tcpserver

@@ -19,6 +19,6 @@ NOFILESGID=`id -g $QPUSER`
 exec $BIN/softlimit -m $MAXRAM  \
   $BIN/tcpserver -c 10 -v -R -p \
   -u $QMAILDUID -g $NOFILESGID $IP $PORT  \
-  ./bin/qpsmtpd 2>&1
+  ./qpsmtpd 2>&1
 # <end tcpserver>