Before this change, you had to modify a fragile data-structure
containing all providers. This often led to things being out of order,
duplicates and conflicts whilst merging. As well as the changes for
one provider being in different places across the file.
After this change, new providers are defined in an easy to edit YAML file,
one per provider.
The config output has been tested before and after for all providers
and any changes are cosmetic only.
Before this change the minimum chunk size would default to 96M which
would allow a maximum size of just below 1TB file to be uploaded, due to
the 10000 part rule for b2.
Now the calculated chunk size is used so the chunk size can be 5GB
making a max file size of 50TB.
Fixes#8460
Before, rclone serve would crash when sent a SIGHUP which contradicts
the documentation - saying it should flush the directory caches.
Moved signal handling from the mount into the vfs layer, which now
handles SIGHUP on all uses of the VFS including mount and serve.
Fixes#8607
dougalandNick Craig-Wood
