tracker-extract-mp3: Extract track number from ID3v2.2 frames
tracker-extract-mp3: Extract track number from ID3v2.2 frames

Fixes NB#185309.

hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker