new PETSc release

[Satish Balay]

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Portable, Extensible Toolkit for Scientific Computation (PETSc)
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              http://www.mcs.anl.gov/petsc

We are pleased to announce the release of the PETSc 2.1.5 parallel
software libraries for the implicit solution of PDEs and related
problems.

The change are listed at http://www-fp.mcs.anl.gov/petsc/docs/changes/215.htm

As always, please send bug reports, questions, and requests for new
features to petsc-maint at mcs.anl.gov.

Thanks for your continued support.

The PETSc developers,
Satish, Kris, Bill, Dinesh, Matt, Lois, Barry and Hong