allowe exp policy for tgt to use cas props
Merge pull request #777 from Unicon/tgt-exp-policy-props

Allow TGT expiration policy control via CAS properties
Issue-740: Limit the queue size in the default ThreadPool in the SimpleHttpClient

use a factory
Issue-740: Limit the queue size in the default ThreadPool in the SimpleHttpClient

merge with master (again)
Issue-740: Limit the queue size in the default ThreadPool in the SimpleHttpClient

merge the branch