fetch: Use CLI::Parser to parse args

install: Use CLI::Parser to parse args

Fix printf error on bash launch

This is handled by `OptionParser` now instead in `cmd/install`.

Refactor `ConflictsWith` to be a `DelegateClass(Hash)`.

version: add CPU tests.

Add a new API inspired by discussion in
https://github.com/Homebrew/homebrew-core/pull/36435 to query if a given
CPU option is supported by a version of macOS.

docs/Shell-Completion: read both types of bash completions.

cleanup: better handle edge cases.

And guard against either of them being missing.

Fixes #5610

- don't complain about "skipping" kegs when `brew cleanup` runs
  automatically
- better handle orphaned directories
- output a better error message when a keg cannot be removed

Fixes #4989
Fixes #5627
Fixes https://github.com/Homebrew/homebrew-core/pull/35958#issuecomment-458031634

Merge pull request #5635 from Homebrew/dependabot/bundler/Library/Homebrew/vendor/rubocop-rspec-1.32.0

Bump rubocop-rspec from 1.31.0 to 1.32.0 in /Library/Homebrew/vendor

How-to-Create-and-Maintain-a-Tap.md add missing )

Remove unneeded `curl_openssl_or_deps` invocation

This fixes a regression introduced in #5626 [1], which removed `curl_openssl_or_deps` and left a single call in the code.

[1]: https://github.com/Homebrew/brew/pull/5626

Bumps [rubocop-rspec](https://github.com/rubocop-hq/rubocop-rspec) from 1.31.0 to 1.32.0.
- [Release notes](https://github.com/rubocop-hq/rubocop-rspec/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop-rspec/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop-hq/rubocop-rspec/compare/v1.31.0...v1.32.0

)

Signed-off-by: dependabot[bot] <support@dependabot.com>

audit: no longer need openssl/curl HTTP mirrors.

Added missing method to_a to Cask::DSL:ConflictsWith class.

Mavericks' `curl` can download these fine over HTTPS.

vendor-install: use Mavericks portable Ruby.

Deprecate macOS versions below Mavericks

This is not universal so is smaller (8MB vs 12MB). It also performs
5-10% faster at:
https://rubybench.org/ruby/ruby/releases?result_type=array_sample_100k___50k

And remove all dead/unneeded code.

Update installation and Linuxbrew documentation