This is nothing special but may be useful for some people out there having problems updating their cvs-trees or being lazy writing some commands in their console. Copy the 'getwinecvs' to /usr/src or wherever you want (don't forget to edit the SRC=Variable if you're doing so) and chmod it to give you x-rights. (e.g.: 'chmod 750 getwinecvs' without quotes)
By running it, it will search for an existing wine-tree... if there is one, it will be cleaned and then updated; if not, the complete tree will be downloaded. When using -c as parameter for getwinecvs, it will automatically begin to compile after getting all the updates and then install. To see what it exactly does, have a look at the source.
Even if it is called General CVS-Updater by gladiac it has been written FOR wine. I hope it is helpful for others. I know it's not very nerdy but.... who cares ;).