Split off candidate-4.2.6 branch

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge branch 'closedown-4.2.x' into candidate-4.2.4

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-11278 Fix core when calling WUListQueriesUsingFile with LDAP

Signed-off-by: Anthony Fishbeck <anthony.fishbeck@lexisnexis.com>
Community Edition 4.2.4-2 Gold

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-11311 Show exception when Queries Using file is run on LDAP system

This is not yet supported, but displaying "no queries found" is misleading.

Signed-off-by: Anthony Fishbeck <anthony.fishbeck@lexisnexis.com>