gdi32: Multi-character character constants aren't portable as their behaviour is compiler dependent according to the C standard. Found by sparse.

wined3d: Map vertex sampler numbers to the correct internal array indices for GetTexture and SetTexture.

wined3d: Map vertex sampler numbers to the correct internal array indices for GetSamplerState and SetSamplerState.

rpcrt4: Dereference the pointer passed to the marshaling/unmarshaling/sizing routines in complex types for interface pointers.

rpcrt4: Set PointerBufferMark to the buffer location immediately after the non-pointer data in complex struct and array marshaling and unmarshaling to keep to the DCE/RPC specification.

rpcrt4: Try a lot harder to resuse existing connections by comparing inside the RpcQualityOfService and RpcAuthInfo objects.

Store a copy of the SEC_WINNT_AUTH_IDENTITY structure passed in to
RpcBindingSetAuthInfo(Ex) to enable us to do this for RpcAuthInfo objects.

rpcrt4: Store the assoc_group_id field returned from the bind_ack packet and use it when creating further connections in the association group.

rpcrt4: When an exception is raised, return the stored exception code instead of the generic RPC_S_CALL_FAILED.