Merge remote-tracking branch 'upstream/master'
Catching up on past 6 weeks regressions...
Add a multilocale test for chdir/cwd().

Suggested by Michael.  Multi-task one is next.
Update the comments on chdir and cwd to represent their behavior in multilocale
situations.
Merge branch 'master' of https://github.com/chapel-lang/chapel
Tuesday afternoon REGRESSIONS snapshot
Updating description of walk#9 failure
Add a test to lock in the behavior of chdir and cwd in a parallel environment.
Add a README for the runtime unit test hierarchy.
Merge branch 'master' into multilocaleChdirTesting
Merge pull request #459 from gbtitus/test-runtime-README

Add a README for the runtime unit test hierarchy.

Not reviewed.
Merge branch 'master' of https://github.com/chapel-lang/chapel into triage-sep-blc
Add comments to chdir() and cwd() indicating behavior in a parallel environment.

Within a single locale, calls to chdir() from a single task will affect the
output of cwd() for all tasks.
Adding entries for the associative primer
Merge pull request #461 from lydia-duncan/multilocaleChdirTesting

Multilocale chdir testing

Add two tests of the chdir()/cwd() functionality. The first test locks in the
behavior in a multilocale context; chdir() calls on one locale will not
affect cwd() calls on a different locale. The second test indicates
behavior in a single locale/multiple tasks environment; chdir() calls
from one task will affect cwd() calls in a different task on the same
locale.

This behavior is now indicated in the comments for these functions.
Merge branch 'master' of https://github.com/chapel-lang/chapel into triage-sep-blc
Merge pull request #462 from benharsh/docs-assoc-readme

Adding readme entries for the associative primer
The Mac FS is case insensitive, so naming the primer the same as the standard
module caused a conflict.  This renames the primer and adds a note pointing to
the new primer in the ones that also used the Random module.
Merge pull request #463 from lydia-duncan/fixMacPrimerFailure

Fix Mac primer naming conflict

The Mac FS is case insensitive, so naming the primer the same as the standard
module caused a conflict. This renames the primer and adds a note pointing to
the new primer in the ones that also used the Random module.
Snapshot of 9/17 regressions

I'm still working my way through the darwin mail, but needed to put this
aside for a moment.