6ad79e03c6
Commit 5d2e6f enabled the setRemoveOnCancelPolicy of the SockJS ScheduledThreadPoolExecutor by default. However that property is only available in JDK 1.7 or later. This change fixes the issue and introduces an extension of ThreadPoolTaskScheduler for for use with SockJS which is necessary in any case since ThreadPoolTaskScheduler does not expose the underlying ScheduledThreadPoolExecutor otherwise. Issue: SPR-11918