Radical.saga

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- fix rounding-up cores for blacklight

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- Major iteration on Globus Online adaptor, including tests and
examples
- move sources into src/
- short_version -> version
- long_version -> version_detail
- use DebugHelper in test suite
- implement 413
- Check status of task to be able to detect failure.
- fix to make async tasks working for methods which do not provide
metrics
- Fix ssh key logic.
- do not pick up pem certs by default
- Add "gres" (Generic Resource) query parameter.
- Add note about queue query parameter.
- fix syntax error in PBS variable spec
- Fix, cleanup and document qstat parsing.
- Document job states.
- stop job monitoring on continous errors (pbs)
- Support "bigflash" nodes selection on Gordon.
- make workdir for shell wrapper a parameter
- force copy shells to be non-posix (sftp)
- make sure that non-posix shells are excused from prompt triggering

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- hotfix for sftp problems on some client/server version
combinations which lead to data inconsistencies

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- make ssh share mode configurable
- Re-enable explicit_exec and add more explanation.
- Make setting job_type conditional on >1 cores.
- more variety in PBS "constants" (ha!)
- fix 401
- make sure the target dir for leased shells exists on
CREATE_PARENTS in dir ctor
- fix 400
- export PPN information to torque and pbs jobs
- merge and fix Danila's patch
- re-enable test for PBSPro_10
- added test config for archer
- re-enable test for PBSPro_10, as discussed with Ole.
- added test config for archer
- add missing error check on mkdir
- fix logical error on dir state recovery
- LoadLeveler support for BG/Q machines.

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- Hotfix release fixing incompatbile sftp flag "-2"
- https://github.com/radical-cybertools/radical.saga/issues/397

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- scattered bug fixes related to connection caching
- configurable switch between scp and sftp
- tweak timeouts on ssh channels
- disable irods adaptor