[godot] Fix include paths.

spine-godot/setup.bat

@@ -4,4 +4,4 @@ git clone --depth 1 https://github.com/godotengine/godot.git -b 3.4.4-stable
 xcopy /E /I .idea godot\.idea
 copy custom.py godot
 xcopy /E /I ..\spine-cpp\spine-cpp spine_godot\spine-cpp
-cd godot & git apply ../livepp.patch scons target=debug custom_modules=..\spine_godot vsproj=yes --jobs=16 & cd ..
+cd godot & git apply ../livepp.patch & scons target=debug custom_modules=..\spine_godot vsproj=yes --jobs=16 & cd ..

spine-godot/spine_godot/SCsub

@@ -1,6 +1,8 @@
 Import('env')
 
 env_spine_runtime = env.Clone()
+# Need to add the include path to env so the vsproj generator consumes it.
 env.Append(CPPPATH=["#../spine_godot/spine-cpp/include"])
+env_spine_runtime.Append(CPPPATH=["#../spine_godot/spine-cpp/include"])
 env_spine_runtime.add_source_files(env.modules_sources, "spine-cpp/src/spine/*.cpp")
 env_spine_runtime.add_source_files(env.modules_sources, "*.cpp")