Fix case sensivity paths

[Huczu]

Hello,
I found a problem with uploading scans to my SonarQube server. I spotted that my files are all lowercase and sonar-scanner doesn't detect the line covered. This fix will change all paths to be the same as they are with case sensitivity.
For example:
C:\test\mycode.cpp to C:\Test\MYCode.cpp

I also updated OCC submodule to 0.9.8.0 release version.

Thanks,
Andrzej Huk

[janosvitok]

As commented in https://stackoverflow.com/a/81493, this code may swallow file extension and-or may not work on Documents directory.