Currently we install after printing out the various failure category
results.

There is a "--delete-my-settings" option that is mentioned to override
the file collision detection, but it's not actually implemented. We do
automatically ignore file collisions if the previous version was
installed by kdesrc-build, we use md5 digests to detect this case.

I will still need to rearrange the variables so that *only*
kdesrc-build-controlled changes are made in kde-env-master. E.g. KDEHOME
might be changed by the user... but then kdesrc-build will always
complain that it wants to overwrite it.

We're getting close though. :)