stripped out lots of dead code that used DMMG, removed mention of DMMG from a bunch of places

Hg-commit: 668fa41fe9b47969bce796864d43cfe1c187d1cf

namespace Mat utility functions

Hg-commit: 2912dadb08982f5a3e4a9b22bd8b48ffa685bef3

Phase 2 of update of PetscBT: PetscBTDestroy() takes pointer

Hg-commit: aca1f1363559db957297829187a5e034ace731de

phase 1 of PetscBT conversion: changed from Macros to static functions

Hg-commit: 7b64fe46b771f1e27250f571813ebf7716745437

Rename include/private/ to include/petsc-private/

Hg-commit: 9a1730720b0d9756437b40462617551504641ade

MatDucplicate_SeqAIJ_Inode() needs to change the function pointers for the inode specific functions

Hg-commit: eb7a819adc5d1fdd0be363ef881233d2d493b734

Added MatDiagonalSet_SeqAIJPThread()

Hg-commit: 0747f98a19cb9759960faf9099c5652e3000516f

Fix uninitialized variable warning

Hg-commit: 6a2f5e5cb5a117a31097fef8899a371a5f486502

MatMissingDiagonal_XXX bug fix - Break after the first nonzero diagonal is found.

Hg-commit: bc585624d25c8bbe0c4d4cbdc5899e659efe06ef

Namespace symbols

Hg-commit: 6381c9c35281c67f79236266aac1552ff5419815

Added routines related to diagonal access/manipulation for Mat_SeqAIJPThread

Hg-commit: d6bb29b87b777360b9bf11b374901afe6d0b02fa

Move printing of nthreads to MatView_SeqAIJPThread()

Hg-commit: e81245fedddbc65416af67d8073d3e16e055344f

Print number of threads in MatView() when using pthreadsclasses

Hg-commit: f10b5a825d7b8643fd2e00ed7d93a735cf21a468

Close various memory leaks in the pthread code

Hg-commit: 3356356346a7eb5c39828715973385fede7926be

Added MatGetDiagonal_SeqAIPThread(), MatRealPart_SeqAIJPThread(), and MatImaginaryPart_SeqAIJPThread()

Hg-commit: 5ec9d590bc7504cf281ea987686863122d3b923c

More work on MatSeqAIJPThread.
i) First touch of matrix entries.
ii) Added MatZeroEntries_SeqAIJPThread() and MatSeqAIJPThreadSetPreallocation_SeqAIJPThread()

Hg-commit: 4badc912e450e96fb0a60eb76eeb

More work on MatSeqAIJPThread.
i) First touch of matrix entries.
ii) Added MatZeroEntries_SeqAIJPThread() and MatSeqAIJPThreadSetPreallocation_SeqAIJPThread()

Hg-commit: 4badc912e450e96fb0a60eb76eeb47576698c44d

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More work on seqaijpthread matrix class.
i) Removed Mat_SeqAIJPThread data structure and used PetscThreadsLayout instead.
ii) Added MatSetUp_SeqAIJPThread()

Hg-commit: c203478e0a86c4fb9cc1192da39dfd

More work on seqaijpthread matrix class.
i) Removed Mat_SeqAIJPThread data structure and used PetscThreadsLayout instead.
ii) Added MatSetUp_SeqAIJPThread()

Hg-commit: c203478e0a86c4fb9cc1192da39dfd56302d2b32

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commit after merge

Hg-commit: fc1471f01fceb0b540b52232c6a3390742e7a95f

Added PetscThreadsLayout object to manage layout information for threads.

Hg-commit: 67d46ac2c4a968ea3ac836a1334d33833262f001

changed MatCreateMPIXXX() to MatCreateXXX() since that is what they are

Hg-commit: 88fb4066e05405d3c444fb00dd00ab15e805b3e3

Added header file for seqaijpthread matrix class

Hg-commit: cf2873fd515051caf9e6fd62adf7fc50fdf68699

Remove MatAssemblyEnd_SeqAIJPThread()

Hg-commit: 0ad174f3835a8cd6a28a899dfbda1b9ba92943e0

Launch the thread pool only when a matrix or vector class needs it and not on
PetscIntialize().
Made lock-free as the default synchronization scheme.

Hg-commit: 45added8e274973c6aac52fbd29b4e21e7cb7

Launch the thread pool only when a matrix or vector class needs it and not on
PetscIntialize().
Made lock-free as the default synchronization scheme.

Hg-commit: 45added8e274973c6aac52fbd29b4e21e7cb7c64

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Only /* */ comments allowed in C source code

Hg-commit: 9d902efaa09ffe412c5d337f2f6b72a21ce91905

Clean up pthread code.
i) Added header pthreadimpl.h
ii) Removed error checking for now, will add this later.

Hg-commit: 0d5bfd86c86f938f731b5d37bbc35e2475ad173e