Just make it a warning instead.

Closes Homebrew/homebrew#25511.
Closes Homebrew/homebrew#25617.

Closes Homebrew/homebrew#20482.

This can happen on e.g. fossil where the dependency HEAD requires having
an install of fossil in order to check it out. Bit of a silly edge case
but this handles it.

Fixes Homebrew/homebrew#25605

Fixes Homebrew/homebrew#25561.
Fixes Homebrew/homebrew#25410.

Solely because I think `ENV.deparallelize` is *way* clearer than
`ENV.j1`, at least to the uninitiated.

Also, updating the template will reduce the number of `ENV.j1`s that
persist because the Homebrew maintainers want clean histories of
formulae. Ideally, this change should prevent any more cases from being
introduced!

Closes Homebrew/homebrew#25431.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Fixes Homebrew/homebrew#25471.

With this brew-test-bot doesn't skip builds, if a requirement isn't
satisfied but a default_formula is specified.

This default_formula is already in dependencies, because of brew deps.

Closes Homebrew/homebrew#25398.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

The traditional approach to installing the dependencies of a formula is
the following:

  brew install `brew deps formula`

This approach ignores any options that are specified in the parent
formula. This pull request adds a --only-dependencies option to brew
install that installs the dependencies of a formula with optional flags,
but returns before installing the parent formula.

Closes Homebrew/homebrew#25272.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Upstream is no longer maintaining this software, and it does not
build with Xcode 5.

Closes Homebrew/homebrew#24911.

This brings a (small) performance improvement as we yield the files as
they are output by fgrep rather than waiting until fgrep is done to do
any work.

Fixes Homebrew/homebrew#25282.