Description of problem:
Deleting a durable queue / its journal, all _except_one_ journal queues are moved to EFP. The not-returned file is the latest one that is deleted.

This deletion is redundant and harms performance for use cases requiring frequent durable queue create&delete.


Version-Release number of selected component (if applicable):
qpid-cpp-server-linearstore 0.22-49


How reproducible:
100%


Steps to Reproduce:
0. rm -rf /var/lib/qpidd/*; service qpidd restart
1. qpid-receive -a "Durable; {create:always, delete:always, node:{durable:true}}"
2. ll /var/lib/qpidd/qls/p001/efp/*/


Actual results:
The EFP directory with empty journal files is empty.


Expected results:
The directory should contain one journal file (that was created for the Durable queue and returned back to EFP when queue deleted).


Additional info: