[DynInst_API:] Release of MRNET 4.1

[Barton Miller <bart@xxxxxxxxxxx>]

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*      Release 4.1 of the MRNet Multicast/Reduction Network         *
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The new 4.1 release of MRNet is now available. This release of MRNet
includes a source distribution for Unix/Linux and Windows platforms,
plus pre-built binaries for Windows. The release also includes
associated manuals.

Improvements made to MRNet since version 4.0 have been incorporated into
version 4.1.

MRNet is a customizable, high-performance software infrastructure for
building scalable tools and applications.  It supports efficient
multicast and data aggregation functionality using a tree of processes
between the tool's front-end and back-ends.  MRNet-based tools may use
these internal processes to distribute many important tool activities,
for example to reduce data analysis time and keep tool front-end loads
manageable.

More information about MRNet, including downloads for binary and
source, can be found at:
    http://www.paradyn.org/mrnet

Technical papers about MRNet can be found in the 'Middleware' section at:
    http://www.paradyn.org/html/publications-by-category.html

The new features and fixes include:

    * Decrease in packet transmission latency
    * Improved robustness of shutdown in cases of abnormal termination on
    * CrayXT platforms
    * Removal of race conditions in MRNet startup in backend attach mode.
    * Introduction of environmental variables to control timeout delays of
      both topology update streams and events(MRNET_TOPOLOGY_UPDATE_TIMEOUT_MSEC and
      MRNET_EVENT_WAIT_TIMEOUT_MSEC respectively)
    * Build system changes for increase robustness
    * Fixed compatibility with later versions of GCC (4.8+)
    * Support for compiling MRNet using the C++ 2011 option in GCC
    * Numerous additional bug fixes and enhancements

MRNet is designed to be a highly-portable system. The source code has
been compiled using both GNU GCC and native platform compilers. We
have successfully tested MRNet components on the following platforms:
 - Linux        : x86, x86_64, powerpc64, Cray XT
 - Windows      : x86