This commit fixes an error introduced in 6c964d4a78, which would
surface on certain install/reinstall/upgrade failures.
Example:
```
==> Patching
patching file default_out.txt
Hunk #2 FAILED at 11.
1 out of 2 hunks FAILED -- saving rejects to file default_out.txt.rej
Error: wrong number of arguments (given 3, expected 2)
/usr/local/Homebrew/Library/Homebrew/reinstall.rb:77:in `restore_backup'
/usr/local/Homebrew/Library/Homebrew/reinstall.rb:52:in `block in reinstall_formula'
/usr/local/Homebrew/Library/Homebrew/utils.rb:377:in `ignore_interrupts'
/usr/local/Homebrew/Library/Homebrew/reinstall.rb:52:in `rescue in reinstall_formula'
/usr/local/Homebrew/Library/Homebrew/reinstall.rb:10:in `reinstall_formula'
/usr/local/Homebrew/Library/Homebrew/cmd/reinstall.rb:71:in `block in reinstall'
/usr/local/Homebrew/Library/Homebrew/cmd/reinstall.rb:65:in `each'
/usr/local/Homebrew/Library/Homebrew/cmd/reinstall.rb:65:in `reinstall'
/usr/local/Homebrew/Library/Homebrew/brew.rb:112:in `<main>'
```
This ensures that dependencies are verified and tapped before they are
fetched. `FormulaInstaller#lock` has been moved into
`FormulaInstaller#install` to avoid locking until necessary.
While we're here, don't compute dependencies before fetching if we're
not going to use them.
Refactor the CLI::Args module so it doesn't have different paths to
check arguments depending on whether the arguments have been parsed or
not. Instead, set the values we need from the global ARGV at
first, global initialisation time where they will be thrown away when
the actual arguments are parsed.
To do this some other general refactoring was needed:
- more methods made private when possible
- e.g. `HEAD?` used consistently instead of `head` before arguments
are parsed.
- formula options are only parsed after named arguments are extracted
Apply the same changes from #6066.
Also apply the same logics from `brew upgrade` to preserve
`installed_as_dependency`/`installed_on_request` settings
when reinstalling formulae.
- We've never supported `devel` bottles so don't bother outputting their
status to `brew info`
- Don't `brew upgrade` or `brew reinstall` bottles if they were
previously built as a bottle unless there's no bottles defined at all
(rather than there was no compatible bottles). Fixes#5532.
After upgrading existing kegs, we now search and upgrade their
dependents as well. If any are detected that have broken linkage, they
are reinstalled from source.
If there are any formulae in the dependents tree that are pinned, they
are only reinstalled if they're not outdated; in all cases, a suitable
message is printed detailing the kegs that will be acted upon.
