symlinks in platformio.ini should you pre-binding to path instead of late binding to path

[zackees]

In platformio.ini symlinks to forward relative paths must be used

For example

libs_deps=FastLED:symlink://.

If .. is used then that path resolves to a directory in the ~/.platform directory structure.

Suggested Fix

Paths should early bind to the symlink target and the path to should passed back to the backend in absolute path form.

[ritesh006]

please review my whenever you are free

[zackees]

I'm coming back from burning man now, i'll be able to review earliest tomorrow or the next day