The attached patch lets VDR remove a resume.vdr instead of storing a position in it that points to the beginning.
In big collections of recordings, this reduces the time to create/update the recordings menu quite a bit, since VDR does not have to open hundreds of files just to find out that the information in them is a non-information.
After this patch has made it into standard VDR, the performance of the recordings menu can be further enhanced by *never* reading the file, not even when it does exist, since with the attached patch it is clear that an existing resume.vdr always means the recording is not rewound.