dcc-send-limiter.c patch again

Hello

Attaching patch for dcc-send-limiter plugin again.
I've been using it since new year without problems.
Changes:
+       * fixed unnecesary lag in sending data when send is resume
+       * sends that were started before the module was loaded
+         now are being limited as well


-- 
Piotrek
irc: #debian.pl
Mors Drosophilis melanogastribus!