patch to reorder domain masquerading and canonical transformation
- Sometimes one need to apply address masquerading before canonical
transformation (i.e. use these transformations together without
As it was discussed before  there is no simple way in Postfix to do
that. Transformation order is hard-coded and this behavior won't
change in the nearest future.
May be I'm the only one who needs different order but may be my patch
 will be useful for somebody else.