[urlmon/tests] Fix test failures on Win9x/WinMe by using more A-functions

[testbot at testbot.winehq.org]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
http://testbot.winehq.org/JobDetails.pl?Key=5328

Your paranoid android.


=== W2K8SE (32 bit url) ===
url.c:1337: Test failed: unexpected call OnProgress_SENDINGREQUEST