…size/timestamp changing)

Fixes #5785

Fixes #4643

The "relative" argument was missing when Put'ing a file. This
sets an incorrect object entry in the cache, leading to the file being
unreadable when using mount functionality.

Fixes #6151

This fixes the failing integration test: TestIntegration/FsMkdir/FsPutFiles/FsIsFile

This is to make it use the rclone project's account and to remove the
/ in the remote name which was crashing the integration tester!

Do not trigger an error upon parsing argument starting with underscores.

_netdev was already ignored after parsing.

The way this was, the curl interferes with the bash invocation. Here it will authenticate first.

FixRangeOption shouldn't be called on an object of unknown size, but
if it is, make sure it does nothing.

See: #5642

Cloudflare R2 doesn't support range options like `Range: bytes=21-`.

This patch makes FixRangeOption turn a SeekOption into an absolute
RangeOption like this `Range: bytes=21-25` to interoperate with R2.

See: #5642

Before this change FixRangeOption was leaving `Range: bytes=21-`
alone, thus not fulfilling its contract of making Range requests
absolute.

As it happens this form isn't supported by Cloudflare R2.

After this change the request is normalised to `Range: bytes=21-25`.

See: #5642

Before this change rclone used presigned requests to upload single
part objects. This was because of a limitation in the SDK which didn't
allow non seekable io.Readers to be passed in.

This is incompatible with some S3 backends, and rclone wasn't adding
the `X-Amz-Content-Sha256: UNSIGNED-PAYLOAD` header which was
incompatible with other S3 backends.

The SDK now allows for this so rclone can use PutObject directly.

This sets the `X-Amz-Content-Sha256: UNSIGNED-PAYLOAD` flag on the PUT
request. However rclone will add a `Content-Md5` header if at all
possible so the body data is still protected.

Note that the old behaviour can still be configured if required with
the `use_presigned_request` config parameter.

Fixes #5422

* fill in empty values for non-wait mode
* add tracking metadata to observe file change
* completely remove getHashes
* remove unreliable update tests

Closes #6150

Changes made for macOS specific for that style of system.
Paths are established/defined singularly and modes are set automatically
when created. (Platform specific.)

This fixes `go mod tidy` needing manual intervention to build with
previous go versions.

Before this running `go mod tidy` caused the build to break because it
removed the dependency on golang.org/x/mobile and a command line tool
from this package is needed for the build.

This adds an explicit dependency which will mean the tool is always present.

This builds all windows binaries without CGO but with cmount.

cgofuse has a compile mode which works without CGO on Windows for
amd64/x86/arm64 architectures so switch to using that.

…thout