INT-2936 Fix TCP Binary DeSerialization with NIO

Inadvertent sign extension on binary data with bit 7 set
causes early termination of binary deserializers.

The ChannelInputStream (which replaced the piped input
and output streams) failed to mask off the top 24 bits
of "normal" bytes received, causing Deserializers to
believe the stream was closed.

Add a mask of 0xff to bytes read.

Add a test case.
INT-2936 Polishing

Fix Test in 2.2.x branch.
INT-2937 Fix Race Condition in MGS Reaper

Groups changed within the same millisecond that they
were selected for reaping can cause aggregators to
emit duplicate messages.

Use the re-fetched group (used to see if the timetamp
changed) instead of the group passed in to forceClose
(the group might have changed since it was selected as
eligible for reaping).

We still retain the last modified check because it
might have been expired using timeoutOnIdle.
INT-2950 Use spring-amqp 1.1.4.RELEASE
INT-2945 - StoredProc isFunction Property Not Set

For reference see: https://jira.springsource.org/browse/INT-2945

* ensure that for StoredProcedure Inbound Channel Adapter the *isFunction* property is set
* add test

INT-2945 - Code Review - Add Tests