Allow examples to be run in daemon mode

Hg-commit: ddfa6347477721e02bbee13d4f8e2b93163c7078

Added daemon Python

Hg-commit: 072211c16428db808dc7415f7e08653c00017ef2

Updated pthreads streams benchmark.

Hg-commit: 8acfd99288010a337944ffc232f32299cc93674e

More examples

Hg-commit: a8e2f2c193198ad16433626d241c31b4edea9570

Namespace symbols

Hg-commit: 6381c9c35281c67f79236266aac1552ff5419815

Rename DMGetMatrix() to DMCreateMatrix() in Matlab interface;
Fix rule in 'make streams'

Hg-commit: efaf1b9332984f1f24d731ee808597c3d8d8cbb4

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

Hg-commit: 0d5bfd86c86f938f731b5d37bbc35e2475ad173e

Renamed MainJob to PetscThreadsRunKernel and MainWait to PetscThreadsWait

Hg-commit: 44b125778f815ce49647dd42cf739fc68ee59169

Improvements to plotting for benchmarkExample

Hg-commit: 7a93eb0d3fa2e4662884869729a840dd9c164245

Fixing example benchmarking
- Now uses block size correctly for time plots

Hg-commit: 9654a35303f7ce99cb313313d4af3cb9238afbaf

Fix syntax in benchmarkExample.py

Hg-commit: 5ad65589ae654a618e4bc1a29f0c742dd72b587d

Source code, makefiles, and output should not be executable

Hg-commit: b7a5317c393eff1636dfaf28894f18ed4657b2ca

turned off confusing logging for eigen estimator, cleaned up repartitioning code: removed my hack to protect parmetis and aded dumb processor aggregation w/o repartitioning.

Hg-commit: 668967087563a

turned off confusing logging for eigen estimator, cleaned up repartitioning code: removed my hack to protect parmetis and aded dumb processor aggregation w/o repartitioning.

Hg-commit: 668967087563aae3b1328539102ddbe5b38852f4

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Mass revert file modes that were made executable in f6e61ee9c329

Hg-commit: 116d90d0b66125cee0db3e7351047057e756baf5