(HTCONDOR-33)  Add test to see if we "lost" too many PIDs.  "Too many" is less than 70% of the previous total by default (for now) but can be changed with an environment variable (_CONDOR_PROCAPI_RETRY_FRACTION).
(HTCONDOR-33)  Add test to see if we "lost" too many PIDs.  "Too many" is less than 70% of the previous total by default (for now) but can be changed with an environment variable (_CONDOR_PROCAPI_RETRY_FRACTION).

htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor