add imp-dumpfile.sh for calling recv-bucket.pl on cron.
Fixed as following:

1. Changed dumpfile name from *.yml to *.marshal
2. Added to handle *.ctl file for checking status
Changed status filename from *.yml to *.marshal
Added source code about calling rake enju:sync:import.
Added variable for calling rake enju:sync:import
Changed logic of calling rake command. Ignore rake exit status.
Added option for calling recv-bucket.pl.
Merge branch 'master' of https://github.com/nakamura-akifumi/enju_trunk