A general question of procedure

I have a major addition to msession which will not compile unless a new version of phoenix (the library on which msession is based) is also used. Is there a protocol which I should follow, or should I just make sure Phoenix is available before I check in the CVS version? (Anyone building PHP with msession will get nuked when I check-in, and be forced to download a new version of Phoenix and msessiond.) BTW: the change is quite cool. The plugin manager now accepts multiple function plugins. So msession will soon support many loadable code modules. This allows msession to provide virtually any service required across your cluster of web servers.