Utilities/Release: Update macOS Qt 5.9 build for platform versioning

Backport the upstream Qt patch [1] to link Qt binaries using the
`-isysroot` flag instead of `-Wl,-syslibroot`.  This is needed so that
the binaries have a SDK version set, which is needed for runtime
validation on modern macOS versions.

[1] https://code.qt.io/cgit/qt/qtbase.git/commit/?id=6387138a7991b4588639dc48847f175b5afaff84

.gitlab/ci/download_qt_hashes.cmake

@@ -10,4 +10,4 @@ set("5.15.1-0-202009071110qtwinextras-Windows-Windows_10-MSVC2015-Windows-Window
 
 set("5.15.1-0-202009071110qtbase-MacOS-MacOS_10_13-Clang-MacOS-MacOS_10_13-X86_64.7z_hash" df2813ce7c6cb4287abd7956cd1cb9d08312e4ac1208b6cb57af4df11b8ebba1)
 
-set("qt-5.9.9-macosx10.10-x86_64-arm64.tar.xz_hash" aa6229bc6bd01a44d18b07023417698fdf4de7a02b14e971b473d80956a57a1c)
+set("qt-5.9.9-macosx10.10-x86_64-arm64.tar.xz_hash" d4449771afa0bc6a809c14f1e6d939e7732494cf059503ae451e2bfe8fc60cc1)

Utilities/Release/macos/qt-5.9.9-macosx10.10-x86_64-arm64.bash

@@ -20,6 +20,7 @@ type -p makeuniversal >/dev/null
 curl -OL https://download.qt.io/archive/qt/5.9/5.9.9/single/qt-everywhere-opensource-src-5.9.9.tar.xz
 shasum -a 256 qt-everywhere-opensource-src-5.9.9.tar.xz | grep -q 5ce285209290a157d7f42ec8eb22bf3f1d76f2e03a95fc0b99b553391be01642
 tar xjf qt-everywhere-opensource-src-5.9.9.tar.xz
+patch -p0 < "${BASH_SOURCE%/*}/qt-5.9.9.patch"
 
 # Build the x86_64 variant.
 mkdir qt-5.9.9-x86_64

Utilities/Release/macos/qt-5.9.9.patch

+--- qt-everywhere-opensource-src-5.9.9/qtbase/mkspecs/features/mac/default_post.prf.orig	2019-12-03 07:50:08.000000000 -0500
++++ qt-everywhere-opensource-src-5.9.9/qtbase/mkspecs/features/mac/default_post.prf	2020-12-14 09:45:11.000000000 -0500
+@@ -130,7 +130,7 @@
+                 -isysroot$$xcodeSDKInfo(Path, $$sdk)
+             QMAKE_XARCH_LFLAGS_$${arch} = $$version_min_flags \
+                 -Xarch_$${arch} \
+-                -Wl,-syslibroot,$$xcodeSDKInfo(Path, $$sdk)
++                -isysroot$$xcodeSDKInfo(Path, $$sdk)
+ 
+             QMAKE_XARCH_CFLAGS += $(EXPORT_QMAKE_XARCH_CFLAGS_$${arch})
+             QMAKE_XARCH_LFLAGS += $(EXPORT_QMAKE_XARCH_LFLAGS_$${arch})
+@@ -151,7 +151,7 @@
+         version_min_flag = -m$${version_identifier}-version-min=$$deployment_target
+         QMAKE_CFLAGS += -isysroot $$QMAKE_MAC_SDK_PATH $$version_min_flag
+         QMAKE_CXXFLAGS += -isysroot $$QMAKE_MAC_SDK_PATH $$version_min_flag
+-        QMAKE_LFLAGS += -Wl,-syslibroot,$$QMAKE_MAC_SDK_PATH $$version_min_flag
++        QMAKE_LFLAGS += -isysroot $$QMAKE_MAC_SDK_PATH $$version_min_flag
+     }
+ 
+     # Enable precompiled headers for multiple architectures