[pca] new --threads config

[Greg Matthews]

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

I get the following error if the proxy config contains a threads directive:

# ~/perl/pca -d 128331
Using /var/tmp/patchdiag.xref from May/07/08
Host: <myhost> (SunOS 5.10/Generic_125101-10/i386/i86pc)
List: 128331

Patch  IR   CR RSB Age Synopsis
------ -- - -- --- --- 
-------------------------------------------------------
128331 -- < 01 R--  17 SunOS 5.10_x86: pax patch

Downloading 128331-01 (1/1)
Trying http://<my web server>/cgi-bin/pca-proxy.cgi?
Failed
Failed (no Sun Online Account data)
Failed (patch not found)
------------------------------------------------------------------------------
Download Summary: 1 total, 0 successful, 0 skipped, 1 failed

On removing the threads directive, the proxy works again. the proxy 
config file /does/ contain appropriate authentication info.

GREG
-- 
Greg Matthews           01491 692445
Head of UNIX/Linux, iTSS Wallingford

-- 
This message (and any attachments) is for the recipient only. NERC
is subject to the Freedom of Information Act 2000 and the contents
of this email and any reply you make may be disclosed by NERC unless
it is exempt from release under the Act. Any material supplied to
NERC may be stored in an electronic records management system.