Zoltan release notes for Trilinos v12.6

Minor code cleanup and bug fixes.

New Zoltan_Get_Fn interface returning pointers to callback functions.
See zoltan/src/include/zoltan.h for details.

Closest stand-alone Zoltan release is v3.83.  
http://www.cs.sandia.gov/Zoltan

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Zoltan release notes for Trilinos v11.8

Revised Scotch TPL specification in Trilinos' CMake environment to link
with all libraries needed by Scotch v6.

Fixed bug in interface to ParMETIS v4 when multiple vertex weights are used.
Fixed bug in interface to Scotch when some processor has no vertices.

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Zoltan release notes for Trilinos v11.

Highlights are listed below; for more details, see 
Trilinos/packages/zoltan/doc/Zoltan_html/ug_html/ug_release.html .

-  Zoltan is now released under Trilinos' BSD license.

-  The following Zoltan features are no longer supported in Trilinos v11:
   +  Zoltan v1 interface (as described in Zoltan include file lbi_const.h)
   +  Partitioning method OCTPART: use partitioning method HSFC instead.


-  Hierarchical partitioning received several performance, interface and 
   testing improvements.  An easier-to-use interface has been 
   added using simple parameters (HIER_ASSIST, PLATFORM_NAME, TOPOLOGY)
   instead of callback functions; the callback function interface is still
   supported. 

-  Memory usage in Zoltan Distributed Data Directories is improved, leading to
   faster execution times for data directories and hierarchical partitioning.

-  Compilation with gcc 4.7 is now supported.

-  Zoltan supports PT-Scotch v5.1.12 and ParMETIS v4, as well as some older
   versions of these TPLs. 
