Startup scan

[StephenAtty]

My music library is a moderate size (about 28,000 tracks). Forked-Daapd insists on scanning this library in total each time it starts up which takes over 90 minutes during which time it basically is unusable

As it is so easy to crash forked-daapd (by pausing playback in i-tunes for example) this basically renders forked-daap useless.

mt-daap had an option to force a total re-scan or just to check for modified files. Forked-daapd needs this functionality.

[StephenAtty]

I've been looking at this - I'm in the middle of a set of changes on the last version from the Ubuntu repostories. I've added the ability to skip scanning on certain file types for those of us who don't have a totally pure music directory. I'm also adding the ability to NOT rebuild on start up, so it will simply delete entries which have been marked when the file has been deleted.

If anyone is interested in taking the code from this and merging it into their code base then please let me know. But please be aware that I am NOT a C Programmer........