bpo-39481: Implementation for PEP 585 (#18239)
This implements things like `list[int]`,
which returns an object of type `types.GenericAlias`.
This object mostly acts as a proxy for `list`,
but has attributes `__origin__` and `__args__`
that allow recovering the parts (with values `list` and `(int,)`.
There is also an approximate notion of type variables;
e.g. `list[T]` has a `__parameters__` attribute equal to `(T,)`.
Type variables are objects of type `typing.TypeVar`.
diff --git a/PCbuild/pythoncore.vcxproj b/PCbuild/pythoncore.vcxproj
index 3277806..22f1b95 100644
--- a/PCbuild/pythoncore.vcxproj
+++ b/PCbuild/pythoncore.vcxproj
@@ -383,6 +383,7 @@
<ClCompile Include="..\Objects\floatobject.c" />
<ClCompile Include="..\Objects\frameobject.c" />
<ClCompile Include="..\Objects\funcobject.c" />
+ <ClCompile Include="..\Objects\genericaliasobject.c" />
<ClCompile Include="..\Objects\genobject.c" />
<ClCompile Include="..\Objects\interpreteridobject.c" />
<ClCompile Include="..\Objects\iterobject.c" />