- setup the makefiles to support "make" and "make install", which builds
the kpatch-build tools and installs everything in /usr/local.
- update kpatch-build to support new paths
- add "kpatch build" wrapper around kpatch-build
This makes it somewhat easy to use. From the root git dir, just:
sudo scripts/kpatch-build ~/foo.patch
and it'll take care of everything, eventually spitting out the base
module (kpatch.ko) and the hotpatch module kpatch-foo.ko.
This is still all very crude, but a better user interface is coming
soon.