Execute pre_commit_script as a complete path

[ekohl]

Prior to this the pre_commit_script needed to be in contrib, as shipped by the gem. This gives complete freedom on what to run, which gives a lot more freedom.

Currently untested, but @TheMeier recently did a work on cleaning up fixture files. This would allow creating a script that does all the clean ups on every modulesync, and more.

[bastelfreak]

@TheMeier any chance you can test this?

[TheMeier]

I will try to look at it. But can't promise anything ATM

[TheMeier]

Well I had a look into it.

• The script path MUST be passed as absolute path, this should be documented.
• It does not work in noop mode, obviuosly
• If you modify files in the git checkout with the script the changes are not staged by modulesync so it would be the task of the script to do that (fails if not done)

I was actually hoping to use this in a way like https://github.com/lindell/multi-gitter/ to do bulk changes without any other pending modulesync_config triggerd changes.