Now our resolvers will correctly handle multiple packages providing identical
GAs provided that just one has unversioned jar. Packages wanting to use
non-defaul GAV will have to either specify that exactly, or ask given package to
add additional compat version mapping manually (-v switch for add_maven_depmap)
Fragments are also expected in /usr/share/maven-fragments where they
should be moved (backward compat preserved for now).
Big changes are due to reformatting to use spaces (sorry, cleaner
log/diff in separate resolver repo)
