[pca] new --threads config

[Martin Paul]

Greg Matthews wrote:
> I dont think this config option works when pca is configured as a cgi 
> proxy. Perhaps the docs could be updated to reflect this?

It doesn't make sense to use threads on a proxy, but it should do no 
harm either.

I'm just investigating a problem with the threads option in general, 
though, making pca (or the proxy) fail. Can you show me the 
configuration file used for the proxy? It would be also interesting to 
see how the proxy fails - an error message should be in apache's (the 
web servers) error log file.

The workaround is of course to get rid of the threads setting for now. 
When using pca with a local caching proxy, threads support really 
doesn't make much sense.

Martin.