[heads up] Keeping dependencies in sych

[Stefano Mazzocchi]

I tried to compile the "repository" block standalone but it didn't 
compile because it requires both the "database" block and the 
"eventcache" block.

I don't have any problems with these dependencies (they make perfect 
sense) but I would like people to do a little more effort in keeping 
the block dependencies in synch in the blocks.properties file, 
expecially since this will become a big issue with real blocks.

Thanks for your help.

--
Stefano.