Make members of SEALED classes ignore the /vo3 (All memebrs VIRTUAL) setting

[cpyrgas]

Suggested by Volkmar Rigo:

I tried to compile our main projects and I found a new warning, that might be a bit misleading. The project is a VO Project with "All members are virtual". This is the simplified code:

sealed class A
method Dummy(xx as usual) as string
return ""
end class

This code causes the warning " XS0549: 'A.Dummy(USUAL)' is a new virtual member in sealed type 'A'".

I assume that the compiler adds the virtual to the dummy method (because of the "all members are virtual") which then produces the warning, that virtual methods don't make sense in sealed classes.

As a workaround, I currently suppressed the warning XS0549 (because use "warn as error").

[RobertvanderHulst]

We now suppress the warning for generated "virtual" modifiers. When you explicitly add the VIRTUAL modifier then the warning will still be shown.

[cpyrgas]

Confirmed fixed