Failure to evaluate match_expr for one entry now does not affect other entries i the frontend. Issue #3336
Bug 3466: Set SPOOL in query environment instead of LOCAL_DIR

Condor tarball installs generally do:
LOCAL_DIR = /var/lib/condor
SPOOL = $(LOCAL_DIR)/spool

Condor RPM installs generally do:
LOCAL_DIR = /var
SPOOL = $(LOCAL_DIR)/lib/condor/spool

Overriding LOCAL_DIR to get to the secondary schedd doesn't work across both.
Overriding SPOOL to be $(LOCAL_DIR)/spool instead will work for most cases.
Reduce logging by summarize the errors once per schedd. Issue: #3336
Merge branch 'branch_v2plus_3336' into branch_v2plus
Merge remote branch 'origin/branch_v2plus_3466' into branch_v2plus
Simplify list vs set lookups, clearer slices
Merge branch 'branch_v2plus' of ssh://cdcvs.fnal.gov/cvs/projects/glideinwms into branch_v2plus
Merge branch 'branch_v2plus_3336' into branch_v2plus