[WIP] Partial cache read fix#3834

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bdbaddog wants to merge 2 commits intoSCons:masterfrom bdbaddog:partialCacheReadFix

+32-14

Commits on Oct 27, 2020

Prevent files from being partially read from the cache
ravenAtSafe
committed

Commits on Nov 24, 2020

Update Cachedir file copy error handling to handle the expected exceptions shutil.SameFileError, IOError for the default copy shutil.copy(). Move notice that file has been retrieved until after the…
bdbaddog
committed