[3/6] msi: Add a test to show that the InstallSource property is unchanged after an upgrade.

[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=1997

Your paranoid android.


=== W98SE (32 bit patch) ===
Failure running script in VM: Exceeded timeout limit of 315 sec

=== WNT4WSSP6 (32 bit patch) ===
Timeout

=== W2KPROSP4 (32 bit patch) ===
Timeout