Merge branch 'master' of github.com:chapel-lang/chapel into docs-assoc-spec
Update intro on "what is Chapel"
Merge pull request #525 from noakesmichael/spec-overview

Update intro on "what is Chapel"

The old intro was short and focussed on Cray as the developer.  Replaced with text from
 http://chapel.cray.com/overview.html

Reviewed by Lydia
Merge pull request #527 from sungeunchoi/test

Update README.extern with regard to c_string.

Remove any indications that Chapel strings and c_strings can be
interchanged, as it is not pertinent since we have mechanisms to avoid
doing so already.

[Reviewed by Mike]
Commenting out code that will halt
Merge branch 'master' of github.com:chapel-lang/chapel into docs-assoc-spec
Merge pull request #529 from benharsh/docs-assoc-spec

This line was intended to demonstrate code that would halt, but should have been commented out for testing purposes.
Merge branch 'master' of github.com:chapel-lang/chapel into test