flutter updated to not use package symlinks

[Devon Carew]

Hey all, the flutter tool and repo has been updated to not use packages symlinks. This change is on master (but hasn't yet made its way to alpha). To remove any existing package symlinks, just run 'flutter upgrade'.

For people working on the flutter repo itself, you can run 'flutter update-packages'. This will remove any existing packages symlink dirs. 'git clean -x -f -d' will also remove any files and dirs that are not part of the git repo.

The packages symlinks have been replaced by the .packages file at the root of every project. There's a bit more info here and here. Cheers,

Devon

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Devon Carew

Software Engineer

Google, Inc.