(PUP-796) Deprecate CouchDB facts terminus (docs only)
(docs) Add note about install_options to pacman provider
(docs) Document special  value for yumrepo's proxy attribute
(docs) Clarify description and error message for http_proxy_password setting

"URL-compliant" was an odd way to put this, so I revised the text to be less ambiguous.
(docs) Clarify that the file type's mode attribute expects a string, not a number

Also, link to the puppetlabs/acl module.
(PUP-3129) Do not store _timestamp fact in immutable hash

The _timestamp fact causes problems when turning on immutable facts
because it is an unsupported data type (Time) that should not leak into
the puppet language. (The system halts with an error if you try prior to
this fix.)
Merge pull request #3010 from kylog/issue/pup-3129/delete-_timestamp-from-immutable-facts-hash

(PUP-3129) Do not store _timestamp fact in immutable hash
Merge pull request #3008 from nfagerlund/docs_37_deprecations_and_revisions

Docs: 3.7 deprecations and revisions