Promoting r22097, r22100, and r22111 to the release

[approved by sungeun, lydia]

Since we're re-spinning for more major things, since miniMD is a
standout code for this release, and since squashing nested parallelism
through the --dataParIgnoreRunningTasks flag is reasonably innocuous
yet had a significant performance impact on high-core-count machines,
promoting this to the release.



git-svn-id: http://svn.code.sf.net/p/chapel/code/branches/release@22112 3a8e244f-b0f2-452b-bcba-4c88e055c3ca