Avoid symbolic link cycles in FileSystemEntry.visit
Test for link cycles at the point of visitation; detect cycles using visited paths instead of just real paths.
Update the appshell impl to provide the realPath with stats
Normalize realPath and fix a missing JSDoc property
Merge branch 'brackets' into iwehrman/cycle-avoidance
Remove the failFast option to FileSystemEntry.visit as well as the LINK_CYCLE error
Merge pull request #5943 from adobe/iwehrman/cycle-avoidance

Avoid symbolic link cycles