Always symlink internal dependencies even if they already exist (#307)
Always symlink internal dependencies even if they already exist (#307)

Internal dependency symlinks can become stale if the dependency changes
paths in the repo so its best to always recreate them for robustness.
The performance cost of this change isn't too bad as the majority of the symlinking
slowdown is caused by the .bin symlinking.
boltpkg/bolt,boltpkg/bolt