The test for "about:" in InternetCrackUrlW should be more general so
that only URLs without double slashes should also be assumed not to
have a host name.

Add another test for this case and remove an unreliable
InternetCreateUrl test.

Use local temp variable instead.

an OLE interface.

Return FALSE and an error of ERROR_NO_MORE_ITEMS from
InternetGetCookie when there are no cookies for the specified
domain. This fixes a bug in sending a blank cookie to HTTP servers.

Fix an off-by-one error in the size of buffer used to store the port
number in InternetCreateUrlW.

- Add the slash after the port number.
- Only add the port number if the host name is present.

InternetCreateUrlW.

- Don't add double slashes for opaque URLs.
- The default port number for all other schemes is 0.

Parse the scheme the string in InternetCreateFileW and rewrite
url_uses_default_port using schemes instead of strings.

INTERNET_SCHEME enumeration in InternetCreateUrlW.

Use an array of schemes so that it can be re-used for mapping from
INTERNET_SCHEME back to a string and simplify the code in
GetInternetSchemeW.

The url passed in to InternetCreateUrl is an out parameter, so don't
dump it.