Remove deprecation notice from system "xcodebuild"

The new xcodebuild method calls system "xcodebuild" underneath, so this
notice would always be printed. Instead we will just rely on the audit
check.

Fixes #27092.
Remove "brew info <URL>"

Closes #27076.
FormulaInstaller: verify dependencies map to formulae before locking
Add TapDependency
moc: use :optional dep
Use Dependency#option_name in BuildOptions#add_dep_option
fits 0.8.0
fits: don't link fits-env.sh publicly
go-appengine-sdk (386) 1.9.0
go-appengine-sdk (amd64) 1.9.0
google-appengine 1.9.0

Closes #27096.
cloudfoundry-cli 6.0.1

Closes #27097.

Signed-off-by: Brett Koonce <koonce@gmail.com>
Don't verify deps when ignoring them
Use constant
Add custom exception for untapped formulae
Automatically install taps for cross-tap dependencies

Closes #27099.
ansible 1.5.0

Closes #27101.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
Use File.expand_path
Remove libarchive from the blacklist, it's in core now
Use Formula.path