port lint should warn when $Id$ lines are present

[ryandesign (Ryan Carsten Schmidt)]

Now that we're converted to git, Subversion $Id$ lines are no longer relevant. port lint currently warns if the $Id$ line is absent:

$ port lint whois
--->  Verifying Portfile for whois
Warning: Line 2 is missing RCS tag ($Id$)
--->  0 errors and 1 warnings found.

This should be changed to warn if it is present.

[raimue (Rainer Müller)]

In fc45aaf/macports-base:

port lint: warn if obsolete $Id$ keyword is used

This will warn if the $Id$ occurs anywhere in the file.

Closes #52757

[raimue (Rainer Müller)]

$ port lint
--->  Verifying Portfile for whois
Warning: Line 2 is using obsolete RCS tag ($Id$)
--->  0 errors and 1 warnings found.

[ryandesign (Ryan Carsten Schmidt)]

Thanks!

[raimue (Rainer Müller)]

In 4a6a824/macports-base:

port lint: warn if obsolete $Id$ keyword is used

This will warn if the $Id$ occurs anywhere in the file.

Closes #52757