Add DLL Release wxMSW CI build

Append the path to the directory containing the DLLs to PATH to allow
the tests to find them.

Also quote the value of the "Configuration" property as it may (and
does) contain spaces.

.github/workflows/ci_msw.yml

@@ -44,13 +44,15 @@ on:
 jobs:
   msw-vs2019:
     runs-on: windows-2019
-    name: wxMSW vs2019 ${{ matrix.configuration }}/${{ matrix.platform }}
+    name: wxMSW vs2019 ${{ matrix.configuration }} ${{ matrix.platform }}
     strategy:
       fail-fast: false
       matrix:
         include:
           - configuration: 'Debug'
             platform: 'Win32'
+          - configuration: 'DLL Release'
+            platform: 'x64'
 
     steps:
       - name: Checkout
@@ -63,15 +65,20 @@ jobs:
 
       - name: Build
         run: |
-            msbuild /noLogo /m /p:Configuration=${{ matrix.configuration }} /p:Platform=${{ matrix.platform }} build\msw\wx_vc16.sln
+            msbuild /noLogo /m '/p:Configuration=${{ matrix.configuration }}' /p:Platform=${{ matrix.platform }} build\msw\wx_vc16.sln
+            if ( '${{ matrix.configuration }}'.IndexOf('DLL') -ne -1 ) {
+                $dlldir = Join-Path (Get-Location) 'lib\vc_${{ matrix.platform }}_dll'
+                Write-Output "Adding $dlldir to the PATH"
+                $dlldir | Out-File -Append $env:GITHUB_PATH
+            }
 
       - name: Build minimal sample
         run: |
-            msbuild /noLogo /m /p:Configuration=${{ matrix.configuration }} /p:Platform=${{ matrix.platform }} samples\minimal\minimal_vc16.sln
+            msbuild /noLogo /m '/p:Configuration=${{ matrix.configuration }}' /p:Platform=${{ matrix.platform }} samples\minimal\minimal_vc16.sln
 
       - name: Build tests
         run: |
-            msbuild /noLogo /m /p:Configuration=${{ matrix.configuration }} /p:Platform=${{ matrix.platform }} tests\test_vc16.sln
+            msbuild /noLogo /m '/p:Configuration=${{ matrix.configuration }}' /p:Platform=${{ matrix.platform }} tests\test_vc16.sln
 
       - name: Run tests
         working-directory: tests
@@ -80,7 +87,7 @@ jobs:
 
       - name: Build GUI tests
         run: |
-            msbuild /noLogo /m /p:Configuration=${{ matrix.configuration }} /p:Platform=${{ matrix.platform }} tests\test_gui_vc16.sln
+            msbuild /noLogo /m '/p:Configuration=${{ matrix.configuration }}' /p:Platform=${{ matrix.platform }} tests\test_gui_vc16.sln
 
       - name: Run GUI tests
         working-directory: tests