Change Details

``` Since 2016, with macOS 10.12 Sierra, Mac OS X has been renamed in macOS. It would be a nice if Bitcoin's macOS build instructions follow this naming convention to avoid misunderstandings. ``` Backport of core PR13366 https://github.com/bitcoin/bitcoin/pull/13366/files Depends on D3907, D3909 and D3910. Includes name changes to the gitian documentation which are not part of the original PR.

``` Since 2016, with macOS 10.12 Sierra, Mac OS X has been renamed in macOS. It would be a nice if Bitcoin's macOS build instructions follow this naming convention to avoid misunderstandings. ``` Backport of core PR13366 https://github.com/bitcoin/bitcoin/pull/13366/files Depends on D3910. Includes name changes to the gitian documentation which are not part of the original PR.

``` Since 2016, with macOS 10.12 Sierra, Mac OS X has been renamed in macOS. It would be a nice if Bitcoin's macOS build instructions follow this naming convention to avoid misunderstandings. ``` Backport of core PR13366 https://github.com/bitcoin/bitcoin/pull/13366/files Depends on D3907, D3909 and D3910. Includes name changes to the gitian documentation which are not part of the original PR.