Apple is in the process of rolling out its iTunes Match service in a number of new countries. 9to5Mac reports that users in Italy, Portugal, Greece, Slovenia, and Austria can now sign up for the service, although they have yet to be added to Apple’s official list of countries in which the service is available. Launched in the U.S. in November, iTunes Match is a $25/year service that matches tracks in a user’s iTunes library with tracks…