Bugfix: cpsw_bufq.cc: If multiple threads sleep in
            CEventBufSync::getSlot() some may never wake up!

    Guard:  Reject newer YAML properties which require a more recent
            version of CPSW:
              depack/protocolVersion:
              rssiBridge
              socksProxy

    Bugfix: (in udpsrv, i.e., test code): incorrect use of lock guard
            lead to no mutex protection (in simulator only)!

    Bugfix: RSSI protocol module 'push' with absolute timeout would
            pop from underlying queue instead of pushing.

    Fix:    test driver for streams over unreliable transport should use
            some margin of acceptable errors. This was set to 22% (builder
            API) but when the same test was run with a YAML hierarchy the
            corresponding option was not set to relax the acceptable error
            margin.

    Bugfix: path was clobbered (incorrect NELMS) during 'explore' if tail
            was an array.

    Bugfix: protocol stack builder always used depacketizer if no SRP

    Bugfix: (jira ESLCOMMON-178) when loading an IntField config from
            YAML and the IntField has an enum menu then providing numerical
            values in the config file didn't work.

    Bugfix: proto_stack_builder::useDepack() should not set other params

    Feature: derive IStream from IEntry; allows to obtain
             basic properties from the stream interface.

R3.5.4	    4-May-2017	   Till Straumann (strauman)
    Bugfix: Path->toString() segfault
    UDP/TCP: ignore empty buffer chains (but don't deref!)
    Bugfix: when releasing a buffer our allocator never called the destructor
    Changed exceptions in cpsw_buf.cc from InternalError -> InvalidArgError

R3.5.3      14-Mar-2017    Till Straumann (strauman)
    Improved error message when reading config fails
    Use buffers getAvail() instead of getCapacity when reading RSSI header
    add getAvail to udpsrv_util's buffer implementation
    Bugfix: udpsrv's TCP handler
    cpsw_stream_tst should always use a TDEST muxer
    Bugfix: cannot collapse writes when the caller supplies bitmasks
    Bugfix: must not use header after buffer ownership is relinquished
    Bugfix: cpsw_event.cc - shared_pointer released prematurely

R3.5.2      08-Mar-2017    Till Straumann (strauman)
    TCP must not discard messages but wait for queue to drain
    Cleanup in config.mak
    Added ioQueSend() (blocking send with timeout)
    Use blocking send when a reliable channel is involved (TCP/RSSI)

R3.5.1      5-Mar-2017     H. Slepicka (slepicka)
    Changes on the package structure
        Move source code to src folder
    Changes on products name
        linux-x86_64 -> rhel6-x86_64
        linuxRT-xxxx -> buildroot-<version>-xxxx
    Changes on rules.mak file
        Add uninstall rule
        Include .html and other docs at the install rule
    Add top-level Makefile