Doc: Pacemaker Explained: Include information on using master/slave resource in sets
Doc: Pacemaker Explained: Improve the readability of the section on resource sets
Build: Use the 'correct' dependancy for packages using pkgconfig
Doc: Clusters from Scratch: Update the intro and installation chapters
Doc: Pacemaker Explained: Update the introduction
Doc: Clusters from Scratch: Fix the Installation chapter
Test: cts: Fix the --choose option