implementation of SGE manager
more work on Sun Grid Engine support on Amazon EC2
improvements for Sun Grid Engine
using system_cmd
Changed package name
sanity checks
atomic writing of return code
renaming
MUCH faster job instantiation using caching information
misc fixes
 minor
minor
minor
merge
fix
no color during SGE
cosmetics
fixed bug
Merge remote-tracking branch 'origin/env_jbds'
Merge remote-tracking branch 'origin/env_dvsd'