Disable experimental features, add comment

.github/workflows/ci-windows-shared-local.yml

@@ -42,14 +42,10 @@ jobs:
         cmake -G Ninja -S . -B build
         -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=ON
         -DAVIF_CODEC_AOM=LOCAL -DAVIF_CODEC_DAV1D=LOCAL
-        -DAVIF_JPEG=LOCAL -DAVIF_LIBSHARPYUV=LOCAL -DAVIF_LIBXML2=LOCAL
+        -DAVIF_JPEG=LOCAL -DAVIF_LIBSHARPYUV=LOCAL
         -DAVIF_LIBYUV=LOCAL -DAVIF_ZLIBPNG=LOCAL
         -DAVIF_BUILD_EXAMPLES=ON -DAVIF_BUILD_APPS=ON
         -DAVIF_BUILD_TESTS=ON -DAVIF_ENABLE_GTEST=ON -DAVIF_GTEST=LOCAL
-        -DAVIF_ENABLE_EXPERIMENTAL_YCGCO_R=ON
-        -DAVIF_ENABLE_EXPERIMENTAL_GAIN_MAP=ON
-        -DAVIF_ENABLE_EXPERIMENTAL_METAV1=ON
-        -DAVIF_ENABLE_EXPERIMENTAL_SAMPLE_TRANSFORM=ON
         -DAVIF_ENABLE_WERROR=ON $env:AVIF_CMAKE_C_COMPILER $env:AVIF_CMAKE_CXX_COMPILER
     - name: Build libavif (ninja)
       working-directory: ./build

CMakeLists.txt

@@ -799,6 +799,10 @@ endif()
 if(AVIF_BUILD_TESTS)
     enable_testing() # Allow ctest to be called from top-level directory.
     add_subdirectory(tests)
+    # An executable on Windows searches for DLLs it is linked with in the same
+    # directory where it resides and in the directories listed in the Path
+    # environment variable. For convenience, copy avif.dll to the tests binary
+    # directory to allow are_images_equal.exe and the test programs find it.
     if(WIN32 AND BUILD_SHARED_LIBS)
         add_custom_command(
             TARGET avif