[pca] Making PCA try sunsolve first then fall back to proxy

[Martin Paul]

Hi,

> Is there a way to get PCA to try sunsolve first and then when it's
> broken (or going up and down like a yo-yo) to try the proxy as a
> fallback?

Hm, there's no option for pca to control the order in which it tries the 
various download sources - it will always try the local source first, if 
specified.

A workaround would be to run "pca --download" twice, like in:

   pca --download --user=xxx --passwd=yyy
   pca --download --patchurl=http://host/pca-proxy.cgi

The first pca run will download all patches from SunSolve only. The 
second run will skip all patches which already exist from the first run, 
and then try the proxy.

Martin.