Remove ValueArray

92 files deleted.
92 files modified.
Rename makeUserHidden to Key.makeSystem
MRTask2 vs MRTask
remove auto-convert dregs

and Mem Cleaner for VA
Remove various races from TestKeySnapshot

Stall-till-cluster.  Block on remove from one test before starting next.
Bring RPC & Autobuffer fixes back from h2o-dev

autobuffer close would free a TCP channel a 2nd time, if called a 2nd
time from an exception handler path.
Vec keys all use the vec-key generator
GLMGridProgress file collision

StableAPI complains about the now-removed GLM1 pytjhon api.  There is
also a GLM2 Grid api, not tested in StableAPI
Remove apparent false-positive from DL spirals

very slightly weaken error bounds
Turn on the rest of the MRThrow tests
Remove ValueArray

92 files deleted.
92 files modified.
Rename makeUserHidden to Key.makeSystem
MRTask2 vs MRTask
remove auto-convert dregs

and Mem Cleaner for VA
Remove various races from TestKeySnapshot

Stall-till-cluster.  Block on remove from one test before starting next.
Bring RPC & Autobuffer fixes back from h2o-dev

autobuffer close would free a TCP channel a 2nd time, if called a 2nd
time from an exception handler path.
Vec keys all use the vec-key generator
GLMGridProgress file collision

StableAPI complains about the now-removed GLM1 pytjhon api.  There is
also a GLM2 Grid api, not tested in StableAPI
Remove apparent false-positive from DL spirals

very slightly weaken error bounds
Turn on the rest of the MRThrow tests