We don't need to create allocate the outpute file stream and open the file at

We don't need to create allocate the outpute file stream and open the file at
the same time. Allocate the stream when the code generator is allocated, but
open the output after the reduced machine is fully built, just before the
write.

git-svn-id: http://svn.complang.org/ragel/trunk@735 052ea7fc-9027-0410-9066-f65837a77df0