LocalStorage: Remove dependency to sh in the tests
Don't use AF_UNIX socket for Escalator

AF_UNIX sockets are not supported on Windows.
On Unix, a hack was needed as Escalator couldn't
clean its socket properly.
Add signal managment for Windows
LocalStorage: Add basic Windows compatibility

Based on @entwanne's work.

This add event detections and a few tweaks for
Windows. Deletions and empty files are not supported.
Merge branch 'windows_support' into develop. Fix #59