Tamara Dahlgren 1ef71376f2 Bugfix: stage directory permissions and cleaning (#12733) ... * This updates stage names to use "spack-stage-" as a prefix. This avoids removing non-Spack directories in "spack clean" as c141e99 did (in this case so long as they don't contain the prefix "spack-stage-"), and also addresses a follow-up issue where Spack stage directories were not removed. * Spack now does more-stringent checking of expected permissions for staging directories. For a given stage root that includes a user component, all directories before the user component that are created by Spack are expected to match the permissions of their parent; the user component and all deeper directories are expected to be accessible to the user (read/write/execute).		2019-10-16 14:55:37 -07:00
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spack	Bugfix: stage directory permissions and cleaning (#12733)	2019-10-16 14:55:37 -07:00