PMIx v5.0.6 released

[Ralph Castain]

There is a rather urgent PMIx release required based on a recently reported bug that can cause PMIx to delete files it did not create. Organizations and users that have deployed earlier versions are recommended to update as a result.

https://github.com/openpmix/openpmix/releases/tag/v5.0.6

** WARNING **

This release contains a patch required for all servers that enable tool connections. Minus the patch, PMIx may over-aggressively cleanup files from the temporary directory that it did not create. The precise timing of the bug's introduction to the release series is unclear. Thus, all users are advised to update to this version as soon as possible.

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Detailed changes include:

• PR #3479: Multiple commits
• Cleanup a segfault when the host refuses group construct support
• Update PRRTE CI to point at PRRTE v3.0 branch
• Add a --nogreek option to make tarball
• Repair the file removal code