[pca] Download explicitly needed patches and their dependencies.

[Martin Paul]

James,

> I do not see the -I option in the usage.html page, what does -I do? 

Look for "-I, --pretend". It does everything that --install does, 
without actually installing the patch(es).

> On my test box last night I used "pca --askauth -d patch patch patch".
> This looks like it downloaded just the 3 patches I specified on the
> command line. 

I've explained pca's behaviour about using 123456 vs. 123456-78 in the 
other thread you started.

> However the size was too big to actually be only the
> patches I specified. How do I know all what was downloaded?

Kernel patches usually *are* big. pca will list all patches it 
downloads, and you will find one zip file per patch in the current 
working directory after running "pca -d ...". If patch 111111-01 
requires 222222-02 and you run "pca -d 111111", you will end up with 
111111-01.zip and 222222-02.zip in the current directory.

Hope that helps,

Martin.