Wrong --local/-L flag documentation

[ghost]

Version information: v0.4.10

Type: bug

Severity: medium

Description:

ipfs --help defines --local as "Run the command locally, instead of using the daemon". This is completely inaccurate. The flag is used in only two places:

• ipfs add --local uses an Offline Exchange for adding files, skipping the immediate publication of provider records.
• ipfs name resolve --local uses an Offline Routing Resolver, avoiding IPNS queries to the DHT.

The flag should be removed from the root command, and instead added to these two commands.

There's a backward compatiblity angle to consider, where tools could possibly be calling ipfs --local add <file> instead of the better ipfs add --local <file>.

[Stebalien]

This command should also be extended to work elsewhere (e.g., ipfs block stat). Making this option "just work" everywhere is a pretty decent motivation for #4009.

[Stebalien]

Fixed. This is now --offline everywhere and behaves as expected.