security checkup in source control software

A friend of mine mentioned that a time ago he worked at a company where 
they used CVS for source control. They implemented routines to scan code 
when cheking in.
That way if a developer checked in code that used banned routines such 
as gets, strcpy etc. he would receive an email as would his manager :-)

A pitty that this behaviour isn't possible with comercial tools such as 
PVCS or Microsofts VSS. Not to my knowledge anyway

Mads