Test non-default install directories

[AnHeuermann]

Every now and then we have problems with installation paths containign spaces, e.g. ticket #6004 for the default Windows installation path.
Problem is that we don't test it (and don't test it with all features).

We should add a test that validates that

a) Spaces in a path can be handled by everything. E.g. "C:\Programm Files\OpenModelica1.16.0-dev-64bit"
b) Handle all allowed file and directory names. See for Windows the ​Doc on Naming and for Unix there is probably something similar.

We can discuss if we want to assure that a file or directory name can contain all special characters that Windows and Unix allows.
Maybe "ÅåUse all the ăîșțâåöä we can think of/OpenModelica" is a bit to much.
As long default directories are working I would be fine.

[casella]

Sounds good to me :)

[adrpo]

We would need to check for every place a file is generated or read and add a test for it.
It is doable but it will take a while.

[anonymous]

Related to #5811.

[casella]

Indeed. Anything extra in the present ticket that was not mentioned in #5811?

[AnHeuermann]

No, I'll close this one than.