fix handling of local package sets
add common test setup file
ops/configuration: fix infinite loop in sort_package_sets_by_import_order (closes #30)

The commit ensures that, given a set of packages we must sort, all their
imports are in the queue.
install sudo on bootstrap
Merge pull request #31 from rock-core/bugfixes

Bugfixes
update autoproj_bootstrap
released 1.12.5
Merge branch 'stable'