Change port to use apache by default on win7, update test expectations.

LayoutTests/platform/win/http/tests/xmlhttprequest/cache-override-expected.txt

-Tests for bug 8210 - Conditional XMLHttpRequest gets should pass 304 responses unchanged.
-
-Fetching the resource once to cache the response...
-Automatically cached response body is correct; status = 200
-If-Modified-Since override: status = 304
-If-MODIFIED-Since override: status = 304
-If-Modified-Since override (modified): status = 200
-If-Unmodified-Since override: status = 200
-If-Unmodified-Since override (modified): status = 200
-If-Match override: status = 200
-If-Match override (none match): status = 200
-If-None-Match override: status = 304
-If-None-Match override (none match): status = 200
-If-Range override: status = 206
-If-Range override (none match): status = 200
-If-Modified-Since override (uncached response): status = 304
-async: Automatically cached response body is correct; status = 200
-async: If-Modified-Since override: status = 304
-async: If-Modified-Since override (modified): status = 200
-async: If-Unmodified-Since override: status = 200
-async: If-Unmodified-Since override (modified): status = 200
-async: If-Match override: status = 200
-async: If-Match override (none match): status = 200
-async: If-None-Match override: status = 304
-async: If-None-Match override (none match): status = 200
-async: If-Range override: status = 206
-async: If-Range override (none match): status = 200
-async: If-Modified-Since override (uncached response): status = 304