Adding stencil example walk through.  The goal of this section is to
take a serial example and turn it into a distributed one.
Airplane work, most of example 2
Explanation of examples 1 and 2
Adding explanation of example 3 and 4
Started work on example 5
More work on example 5
Adding Example 6
Added example 7 and beginning of example 8
corrected some typos
more typos
Making constructors explicit
Making chunk size for partitioner available through execution policy
Accounting for extra commas in BOOST_STATIC_ASSERT_MSG
More accounting for extra commas in BOOST_STATIC_ASSERT_MSG
Marking functions as no_return as appropriate
Fix compilation warnings (unused variable)
Fix failing parallel algorithm tests
Reduce test load to avoid timeouts
Fix chunk size control in execution policies.
Fixing hpx::terminate() not to return under any circumstances