(cherry picked from commit 7d43e2a)

(cherry picked from commit 751c647)

The package is no longer maintained and includes potential security
vulnerabilities (a use-after-free and several crashes) that are known
and not fixed in the version present in nixpkgs. They don't look too bad
judging from the trigger vectors mentioned in the changelog, but with
the project going unmaintained one of them becoming a security
vulnerability would likely not be noticed.

(cherry picked from commit ad992cb)

(cherry picked from commit e7549b9)

(cherry picked from commit d664b8f)

(cherry picked from commit ef05e10)

(cherry picked from commit f85a4ba)

(cherry picked from commit c547c3f)

(cherry picked from commit e0c6981)

(cherry picked from commit 3b3bde4)

(cherry picked from commit 4edb318)

(cherry picked from commit 655a5fa)

(cherry picked from commit 77140a9)

(cherry picked from commit c100a45)

(cherry picked from commit 0eb3b93)

(cherry picked from commit b61dd2b)

The previous description "string" is misleading in the full options
manual pages; they are actually concatenated strings, with a specific
character.

The empty string version ("types.string") has been special-cased to
provide a better message.

(cherry picked from commit 0808c7c)

Adds macOS Mojave (10.14) support.

(cherry picked from commit 42088e0)

(cherry picked from commit a01cab0)
Backport of #48000

(cherry picked from commit 88e7d7b)

(cherry picked from commit 011a463)

(cherry picked from commit fed0a4e)

(cherry picked from commit 97d2779)

(cherry picked from commit 3ad8afb)

(cherry picked from commit b4d4aff)

(cherry picked from commit 43d8a40)

(cherry picked from commit 0ba1f0a)

(cherry picked from commit 9dd5dc5)

(cherry picked from commit b3dff39)

Cross fixes for 18.09