CleverRaven/Cataclysm-DDA — pull request #5496 by ianestrachan (2014-01-10 19:53:26+00:00)
Title: Allow circular saws to be used to remove vehicle parts.

Suggested in #5464. You can use a circular saw to remove parts if you don't have a hacksaw, which takes 20 charges (suggestions welcome on this value).

Pretty straightforward. If you have both, it seems that consume_tools will automatically go for the one that requires -1 charges (since that means nothing gets used up at all), which is reasonable.