Add time metadata to DNGs exported from MLV
Created originally on Bitbucket by houz
Was already merged in Bitbucket before import, marked as merged by the import user
This is an updated version of the one about: When printing the months in verbose mode of mlv_dump they were off by 1 since the tm_mon values in struct tm start at 0 on unix and the camera seems to adhere to that.
Now it also contains code to set DateTime(Original) and SubSecTime(Original) for the DNGs.
Sorry that I updated the old PR, I couldn't find a way to create a new one.