[TransWarp] ZConfig include files are not closed

[alexander smishlajev]

hello!

it appears that ZConfig never explicitely closes it's main files - 
schema definition and the configuration file.  these files are closed by 
garbage collector when corresponding resources go out of scope.

the problem is with config includes: if there is an '%include' 
directive, then neither included file nor the main config is collected 
by gc.  both files remain open while the application is active.  so we 
have to shut down the server before we can edit it's configuration.

best wishes,
alex.

ps.  i am not sure if such info is on the topic of this list.  although 
peak.load_zconfig is involved in the process, it is not guilty as far as 
i understand.  i beg your pardon if ZConfig issues shouldn't be 
discussed here.