Thin forcing page caching: should be configurable

Thin is hard coded to require page caching. Mongrel doesn't do this, so thin is incompatible with some configurations of existing mongrel installations.

I'd like to propose that thin have an optional configuration setting to make it not conduct page caching. Existing installations will be unaffected b/c this would be an optional setting.

The attached lines of code are where I believe the issue is occurring:

http://pastie.textmate.org/private/mdzbkpykitysl2xl4lwzcw

If there is a thin config file, perhaps we could set "page_caching: [true|false]" with the default (when not present) being true?

Changing this line:

elsif file_exist?(cached_path)

to something like:

elsif CONFIG[:page_caching] && file_exist?(cached_path)

This would also help speed up installations a bit where page caching is not required of thin, because the system would not be looking to disk for the cached files, when page caching is disabled.

Hope this helps - drop me a line if I can assist in implementation or explain why this is an important change.

Sincerely - S