logilab-devtools #6445 cvslog.py : imports stuff from devtools.lib [resolved]

there are some imports in cvslog.py which have not been migrated to devtools.vcslib and are still from devtools.lib

priorityimportant
typebug
done in0.12.2
load left0.000
closed by#2e30cffd5ea1 fix imports (closes #6445)