deps: don't skip dependencies that are both :build and :test

[EricFromCanada]

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same change?
• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes? Here's an example.
• Have you successfully run brew style with your changes locally?
• Have you successfully run brew tests with your changes locally?

---

Fix for brew deps including dependencies or requirements that are both :build and :test only if both --include-build and --include-test are specified, as only one should be necessary.

Before

$ brew deps --annotate sourcedocs --include-requirements --include-build --include-test

:xcode [build] [test]

$ brew deps --annotate sourcedocs --include-requirements --include-test

:xcode [build] [test]

$ brew deps --annotate sourcedocs --include-requirements --include-build

$ brew deps --annotate --tree sourcedocs --include-requirements --include-build --include-test

sourcedocs

└── :xcode  [build] [test]
$ brew deps --annotate --tree sourcedocs --include-requirements --include-test

sourcedocs
$ brew deps --annotate --tree sourcedocs --include-requirements --include-build

sourcedocs
$ brew deps --annotate ibex --include-build --include-test

bison [build]

flex [build]

gettext

help2man [build]

pkg-config [build] [test]

$ brew deps --annotate ibex --include-test

pkg-config [build] [test]

$ brew deps --annotate ibex --include-build

bison [build]

flex [build]

gettext

help2man [build]

$ brew deps --annotate --tree ibex --include-build --include-test

ibex

├── bison  [build]

├── flex  [build]

│   ├── help2man  [build]

│   └── gettext

└── pkg-config  [build] [test]
$ brew deps --annotate --tree ibex --include-test

ibex
$ brew deps --annotate --tree ibex --include-build

ibex

├── bison  [build]

└── flex  [build]

├── help2man  [build]

└── gettext
  

After

$ brew deps --annotate sourcedocs --include-requirements --include-build --include-test

:xcode [build] [test]

$ brew deps --annotate sourcedocs --include-requirements --include-test

:xcode [build] [test]

$ brew deps --annotate sourcedocs --include-requirements --include-build

:xcode [build] [test]

$ brew deps --annotate --tree sourcedocs --include-requirements --include-build --include-test

sourcedocs

└── :xcode  [build] [test]
$ brew deps --annotate --tree sourcedocs --include-requirements --include-test

sourcedocs

└── :xcode  [build] [test]
$ brew deps --annotate --tree sourcedocs --include-requirements --include-build

sourcedocs

└── :xcode  [build] [test]
$ brew deps --annotate ibex --include-build --include-test

bison [build]

flex [build]

gettext

help2man [build]

pkg-config [build] [test]

$ brew deps --annotate ibex --include-test

pkg-config [build] [test]

$ brew deps --annotate ibex --include-build

bison [build]

flex [build]

gettext

help2man [build]

pkg-config [build] [test]

$ brew deps --annotate --tree ibex --include-build --include-test

ibex

├── bison  [build]

├── flex  [build]

│   ├── help2man  [build]

│   └── gettext

└── pkg-config  [build] [test]
$ brew deps --annotate --tree ibex --include-test

ibex

└── pkg-config  [build] [test]
$ brew deps --annotate --tree ibex --include-build

ibex

├── bison  [build]

├── flex  [build]

│   ├── help2man  [build]

│   └── gettext

└── pkg-config  [build] [test]
  

[MikeMcQuaid]

Looks great, thanks for the fix @EricFromCanada!