urlmon/tests: Restructured IUriBuilder tests so they can accept IUriBuilders which don't have a base IUri.

Turns out an IUriBuilder doesn't need a valid IUri set as its IUri
property for the CreateUri* functions to succeed.

Just do not do the parts that are known to require ttf tables.

urlmon: Correctly handle INET_E_USE_DEFAULT_SETTING returned from GetBindString(BINDIND_ACCEPT_MIMES).

windowscodecs: Test that ICO GetSize returns the BITMAPINFOHEADER size instead of the ICONDIRENTRY size.