updated retry exec func to only raise after a command failure and retry less than the appropriate level, fixes an issue where a classad error on the lowest recursion level would still raise
some fleshing out of post processing api
exchange family test now looks in post process for pref_flow
read_uuid now returns, oops
removed read_uuid
test combine now cleans up after itself only if it passes
create is now only called if file is not read-only
added post processing driver to tools
test family exchange now cleans up properly after itself
outlined implementation for postprocessing work
added pp interface to problems
more pp structure, close to being there