port lint should check for whitespace before/after variant descriptions

[ryandesign (Ryan Carsten Schmidt)]

The syntax of variant descriptions lends itself to being written incorrectly, resulting in unintended whitespace before or after the description.

Wrong:

variant foo description { foodesc } {
    ...
}
variant bar description " bardesc " {
    ...
}

Right:

variant foo description {foodesc} {
    ...
}
variant bar description "bardesc" {
    ...
}

port lint should warn of whitespace before or after a variant description.

[raimue (Rainer Müller)]

In my opinion, port variants should strip leading and trailing whitespace on variant descriptions.

[ryandesign (Ryan Carsten Schmidt)]

That would be another way to go. Probably a better way. I filed that as a separate ticket #14037. If we do that, then we don't need to change port lint.

[ryandesign (Ryan Carsten Schmidt)]

#14037 has been implemented (good job, Rainer!) so we don't need any port lint changes after all.