*-binutils: add livecheck

[samford]

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Today's 3.2.6 release of brew includes the new formula/cask livecheck block DSL methods (see Homebrew/brew#11743), so now we can start using them in livecheck blocks.

The main purpose of this feature is to allow formulae/casks to use the same check as another, so we can easily sync checks for formulae/casks that use the same stable/url file. Up until now, we've had to duplicate livecheck blocks and manually update them when the canonical livecheck block changes (e.g., sqlite and related formulae). With this, we can simply update the canonical livecheck block and others that reference are automatically updated.

As mentioned in the related documentation, these methods should only reference a formula/cask in the same tap, as they will error when a tap isn't already tapped.

One thing that I'll need to update the documentation to mention is that this DSL should only be used when one formula/cask is canonical among those with a duplicate stable/url. If the formulae/casks are all of equal stature (e.g., the beats formulae), this feature shouldn't be used.

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With this in mind, this PR updates formulae that have the same stable URL as binutils to use formula "binutils", so these checks are synced.

I've identified the other sets of formulae that can use formula and I'll be creating follow-up PRs for those.