Merge branch 'master' into jgrpp

# Conflicts:
#	.github/workflows/ci-build.yml
#	.github/workflows/release-linux.yml
#	.github/workflows/release-macos.yml
#	.github/workflows/release-windows.yml
#	.gitignore
#	COMPILING.md
#	src/company_gui.cpp
#	src/date_gui.cpp
#	src/engine.cpp
#	src/engine_func.h
#	src/fileio.cpp
#	src/linkgraph/linkgraph_gui.h
#	src/newgrf_debug_gui.cpp
#	src/newgrf_gui.cpp
#	src/order_gui.cpp
#	src/osk_gui.cpp
#	src/rail_gui.cpp
#	src/road_gui.cpp
#	src/script/api/script_event_types.hpp
#	src/sl/oldloader_sl.cpp
#	src/smallmap_gui.cpp
#	src/station_cmd.cpp
#	src/toolbar_gui.cpp
#	src/town_gui.cpp
#	src/transparency_gui.cpp
#	src/vehicle_gui.cpp
#	src/widget.cpp
#	src/widget_type.h
#	src/widgets/dropdown.cpp
#	src/widgets/dropdown_func.h
#	src/widgets/dropdown_type.h
#	src/widgets/group_widget.h
#	src/widgets/vehicle_widget.h
#	src/window.cpp
#	src/window_gui.h
#	src/window_type.h

.github/workflows/ci-build.yml

@@ -112,7 +112,7 @@ jobs:
 
     name: Linux (${{ matrix.name }})
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     env:
       CC: ${{ matrix.compiler }}
       CXX: ${{ matrix.cxxcompiler }}
@@ -128,6 +128,14 @@ jobs:
       with:
         ref: ${{ github.event.inputs.ref }}
 
+    - name: Setup vcpkg caching
+      uses: actions/github-script@v6
+      with:
+        script: |
+          core.exportVariable('ACTIONS_CACHE_URL', process.env.ACTIONS_CACHE_URL || '');
+          core.exportVariable('ACTIONS_RUNTIME_TOKEN', process.env.ACTIONS_RUNTIME_TOKEN || '');
+          core.exportVariable('VCPKG_BINARY_SOURCES', 'clear;x-gha,readwrite')
+
     - name: Install dependencies
       run: |
         echo "::group::Update apt"
@@ -147,6 +155,16 @@ jobs:
           ${{ matrix.libraries }} \
           zlib1g-dev \
           # EOF
+
+        echo "::group::Install vcpkg dependencies"
+
+        # Disable vcpkg integration, as we mostly use system libraries.
+        mv vcpkg.json vcpkg-disabled.json
+
+        # We only use breakpad from vcpkg, as its CMake files
+        # are a bit special. So the Ubuntu's variant doesn't work.
+        #vcpkg install breakpad
+
         echo "::endgroup::"
       env:
         DEBIAN_FRONTEND: noninteractive
@@ -185,10 +203,15 @@ jobs:
 
     - name: Test
       run: |
-        cd build
-        ctest -j $(nproc) --timeout 120
+        (
+          cd build
+          ctest -j $(nproc) --timeout 120
+        )
 
-        # Check no tracked files have been modified
+        # Re-enable vcpkg.
+        mv vcpkg-disabled.json vcpkg.json
+
+        # Check no tracked files have been modified.
         git diff --exit-code
 
   macos:
@@ -216,38 +239,13 @@ jobs:
       with:
         ref: ${{ github.event.inputs.ref }}
 
-    - name: Install dependencies
-      env:
-        HOMEBREW_NO_AUTO_UPDATE: 1
-        HOMEBREW_NO_INSTALL_CLEANUP: 1
-      run: |
-        brew install \
-          pkg-config \
-          # EOF
-
-    - name: Prepare cache key
-      id: key
-      run: |
-        echo "image=$ImageOS-$ImageVersion" >> $GITHUB_OUTPUT
-
-    - name: Enable vcpkg cache
-      uses: actions/cache@v3
+    - name: Setup vcpkg caching
+      uses: actions/github-script@v6
       with:
-        path: /usr/local/share/vcpkg/installed
-        key: ${{ steps.key.outputs.image }}-vcpkg-${{ matrix.arch }}-1 # Increase the number whenever dependencies are modified
-        restore-keys: |
-          ${{ steps.key.outputs.image }}-vcpkg-${{ matrix.arch }}
-
-    - name: Prepare vcpkg
-      run: |
-        vcpkg install --triplet=${{ matrix.arch }}-osx \
-          curl \
-          liblzma \
-          libpng \
-          lzo \
-          zlib \
-          zstd \
-          # EOF
+        script: |
+          core.exportVariable('ACTIONS_CACHE_URL', process.env.ACTIONS_CACHE_URL || '');
+          core.exportVariable('ACTIONS_RUNTIME_TOKEN', process.env.ACTIONS_RUNTIME_TOKEN || '');
+          core.exportVariable('VCPKG_BINARY_SOURCES', 'clear;x-gha,readwrite')
 
     - name: Install OpenGFX
       run: |
@@ -312,33 +310,13 @@ jobs:
       with:
         ref: ${{ github.event.inputs.ref }}
 
-    - name: Prepare cache key
-      id: key
-      shell: powershell
-      run: |
-        # Work around caching failure with GNU tar
-        New-Item -Type Junction -Path vcpkg -Target c:\vcpkg
-
-        Write-Output "image=$env:ImageOS-$env:ImageVersion" >> $env:GITHUB_OUTPUT
-
-    - name: Enable vcpkg cache
-      uses: actions/cache@v3
+    - name: Setup vcpkg caching
+      uses: actions/github-script@v6
       with:
-        path: vcpkg/installed
-        key: ${{ steps.key.outputs.image }}-vcpkg-${{ matrix.arch }}-1 # Increase the number whenever dependencies are modified
-        restore-keys: |
-          ${{ steps.key.outputs.image }}-vcpkg-${{ matrix.arch }}
-
-    - name: Prepare vcpkg
-      shell: bash
-      run: |
-        vcpkg install --triplet=${{ matrix.arch }}-windows-static \
-          liblzma \
-          libpng \
-          lzo \
-          zlib \
-          zstd \
-          # EOF
+        script: |
+          core.exportVariable('ACTIONS_CACHE_URL', process.env.ACTIONS_CACHE_URL || '');
+          core.exportVariable('ACTIONS_RUNTIME_TOKEN', process.env.ACTIONS_RUNTIME_TOKEN || '');
+          core.exportVariable('VCPKG_BINARY_SOURCES', 'clear;x-gha,readwrite')
 
     - name: Install OpenGFX
       shell: bash