[pca] Install 3 patches and their dependencies using PCA

[Martin Paul]

James,

> I am not understanding how this works, if the dependency patches are
> downloaded, I do not see them. It downloads the patchnumber.zip. I unzip
> that to reveal the patch directory and inside there is the patch read me
> and what looks like a bunch of packages. Not sure where the dependencies
> are handled.

You probably specified not only the patch id (e.g. 137137) but a patch 
if including revision (e.g. 137137-09). In the second case, pca will not 
check patch dependencies, but will list or download exactly this one 
patch. What you want is probably something like:

   pca -i 127127 137137 138888

Try with "-l" instead of "-i" at first, as this will show the 
dependencies. Usually you only have to specify the latest kernel patch, 
as it will require all previous kernel patches anyway.

If you want an explicite outdated revision of a patch, pca won't be able 
to check the dependencies for that, because there is no information 
about old revisions in the patchdiag.xref file used by pca. In that 
case, download the patch and check the READMEs for required patches. 
Installation of the patch will fail unless all required patches are 
there, so you can't break anything.

I recommend sticking to the most current revision of any patch you 
install, though.

Martin.