Rename “OS X” to the newer “macOS” convention

doc/release-process.md

@@ -89,7 +89,7 @@ Ensure gitian-builder is up-to-date:
     wget -P inputs http://downloads.sourceforge.net/project/osslsigncode/osslsigncode/osslsigncode-1.7.1.tar.gz
     popd
 
-Create the OS X SDK tarball, see the [OS X readme](README_osx.md) for details, and copy it into the inputs directory.
+Create the macOS SDK tarball, see the [macOS readme](README_osx.md) for details, and copy it into the inputs directory.
 
 ### Optional: Seed the Gitian sources cache and offline git repositories
 
@@ -111,7 +111,7 @@ NOTE: Offline builds must use the --url flag to ensure Gitian fetches only from
 
 The gbuild invocations below <b>DO NOT DO THIS</b> by default.
 
-### Build and sign Bitcoin Core for Linux, Windows, and OS X:
+### Build and sign Bitcoin Core for Linux, Windows, and macOS:
 
     pushd ./gitian-builder
     ./bin/gbuild --num-make 2 --memory 3000 --commit bitcoin=v${VERSION} ../bitcoin/contrib/gitian-descriptors/gitian-linux.yml
@@ -134,7 +134,7 @@ Build output expected:
   1. source tarball (`bitcoin-${VERSION}.tar.gz`)
   2. linux 32-bit and 64-bit dist tarballs (`bitcoin-${VERSION}-linux[32|64].tar.gz`)
   3. windows 32-bit and 64-bit unsigned installers and dist zips (`bitcoin-${VERSION}-win[32|64]-setup-unsigned.exe`, `bitcoin-${VERSION}-win[32|64].zip`)
-  4. OS X unsigned installer and dist tarball (`bitcoin-${VERSION}-osx-unsigned.dmg`, `bitcoin-${VERSION}-osx64.tar.gz`)
+  4. macOS unsigned installer and dist tarball (`bitcoin-${VERSION}-osx-unsigned.dmg`, `bitcoin-${VERSION}-osx64.tar.gz`)
   5. Gitian signatures (in `gitian.sigs/${VERSION}-<linux|{win,osx}-unsigned>/(your Gitian key)/`)
 
 ### Verify other gitian builders signatures to your own. (Optional)
@@ -161,13 +161,13 @@ Commit your signature to gitian.sigs:
     git push  # Assuming you can push to the gitian.sigs tree
     popd
 
-Codesigner only: Create Windows/OS X detached signatures:
+Codesigner only: Create Windows/macOS detached signatures:
 - Only one person handles codesigning. Everyone else should skip to the next step.
-- Only once the Windows/OS X builds each have 3 matching signatures may they be signed with their respective release keys.
+- Only once the Windows/macOS builds each have 3 matching signatures may they be signed with their respective release keys.
 
-Codesigner only: Sign the osx binary:
+Codesigner only: Sign the macOS binary:
 
-    transfer bitcoin-osx-unsigned.tar.gz to osx for signing
+    transfer bitcoin-osx-unsigned.tar.gz to macOS for signing
     tar xf bitcoin-osx-unsigned.tar.gz
     ./detached-sig-create.sh -s "Key ID"
     Enter the keychain password and authorize the signature
@@ -192,12 +192,12 @@ Codesigner only: Commit the detached codesign payloads:
     git tag -s v${VERSION} HEAD
     git push the current branch and new tag
 
-Non-codesigners: wait for Windows/OS X detached signatures:
+Non-codesigners: wait for Windows/macOS detached signatures:
 
-- Once the Windows/OS X builds each have 3 matching signatures, they will be signed with their respective release keys.
+- Once the Windows/macOS builds each have 3 matching signatures, they will be signed with their respective release keys.
 - Detached signatures will then be committed to the [bitcoin-detached-sigs](https://github.com/bitcoin-core/bitcoin-detached-sigs) repository, which can be combined with the unsigned apps to create signed binaries.
 
-Create (and optionally verify) the signed OS X binary:
+Create (and optionally verify) the signed macOS binary:
 
     pushd ./gitian-builder
     ./bin/gbuild -i --commit signature=v${VERSION} ../bitcoin/contrib/gitian-descriptors/gitian-osx-signer.yml
@@ -216,7 +216,7 @@ Create (and optionally verify) the signed Windows binaries:
     mv build/out/bitcoin-*win32-setup.exe ../bitcoin-${VERSION}-win32-setup.exe
     popd
 
-Commit your signature for the signed OS X/Windows binaries:
+Commit your signature for the signed macOS/Windows binaries:
 
     pushd gitian.sigs
     git add ${VERSION}-osx-signed/"${SIGNER}"