more cold pexels can be fixed
Created originally on Bitbucket by escho
Was already merged in Bitbucket before import, marked as merged by the import user
Set the max. number of cold pixels, which can be fixed to 5000. ( I forced a raw-video containing more than 3500 real cold pixels, so the old value of 2000 is not enogh anymore). This change also trys to prevent a sigsegfault, which appeares, if there are more cold pixels than can be fixed. This fault should be fixed later. At the moment I do not understand, why that error happens.