Gives more accurate error propagation, control of depth of recursion
and short circuit recursion where possible.
Most of the the heavy lifting is done in the "fs" package, making file
system implementations a bit simpler.
This commit contains some code originally by Klaus Post.
Fixes#316
* Make all integration tests start with an empty remote
* Add an -individual flag so this can be a different bucket/container/directory
* Fix up tests after changing the hashers
* Add sha1sum test
* Make directory checking in tests sleep more to fix acd inconsistencies
* Factor integration tests to make more maintainable
* Ensure remote writes have a fstest.CheckItems() before use
* this fixes eventual consistency on the directory listings later
* Call fs.Stats.ResetCounters() before every fs.Sync()
Note that the tests shouldn't be run concurrently as fs.Config is global state.
* Convert all paths to UNC paths on Windows.
* Update local filesystem to always use UNC paths.
* Change tests, so they can work with Windows character replacements.
* Remove "/" suffix on paths.
* Always use path/filepath
* Define Mover interface to move a single object
* Define DirMover interface to move a directory
* Implement DirMove operation
* Add `rclone move` command
* Tests for Dir Move
To Do
* Implement Move, DirMover in local, drive, dropbox
* unit test for Mover
* unit test for DirMover
This means that dropbox no longer stores MD5SUMs and modified times.
Fixup the tests so that blank MD5SUMs are ignored, and that if
Precision is set to a fs.ModTimeNotSupported, ModTimes can be ignored too.
This opens the door for other FSs which don't support metadata easily.
