[semver] Remove leading 'v' from `#inspect`

This deviates from the upstream Puppet SemVer, but it's very silly to
have in the first place. This simplifies the forge module logic.
[module/forge] Remove dead logging statements
[module/forge] Use R10K::Execution for commands
[module/forge] Clarify expected version
(GH-63 GH-51) [module/forge] reinstall module when author changed
Remove abstraction leak in test stubbing
Update module/forge specs to use rspec 2.14 syntax
Merge branch 'next-update-forge-modules' into next