The failures in rpcrt4:server on Windows are caused by an access violation
thrown in NdrVaryingArrayUnmarshall() called from get_5numbers(). I've
created a minimum get_5numbers() test with Microsoft tools and that throws
the same access violation. The access violation disappears when zeroing
out the StubMsg before calling NdrClientInitializeNew(), so my guess is
Windows NdrVaryingArrayUnmarshall() uses an uninitialized member.

httpapi: Add HttpDeleteServiceConfiguration, HttpQueryServiceConfiguration and HttpSetServiceConfiguration stubs.

wininet: Make sure that we have data buffered before sending INTERNET_STATUS_REQUEST_COMPLETE notification.

Doing the levels calculation before the object is created prevents leaking
resources and avoids changing baseTexture.levels after it's been initialized
by basetexture_init().