clean up .svn files, leftover promises.cf, and sync masterfiles lib
Makefile: check and libdir targets
move policies to cfengine_files
bring all policies except promises.cf in sync with masterfiles.git
more restructuring: standalone roadshow.cf and update_roadshow.cf
enable policy purge and autorun
roadshow update: copy things to service/autorun
convert roadshow policies into an autorun file
reindent roadshow services.cf
make services.cf run things only if they are defined
disable pkg_apt_cacher.cf because the apt_packages bundle is missing
Merge pull request #4 from tzz/3.6.2

Synchronize 3.6.2 with masterfiles.git and update policies
The CFEngine Roadshow policies are now on top of classical masterfiles.