added visible tag for TV show label
Merge pull request #1666 from mad-max/tvshows_label

added visible tag for TV show label
use safe decompression for lzo'd textures to avoid a crash on corrupt textures. The decompression is only fractionally slower
pass the correct output buffer size to lzo1x_compress rather than the input buffer size
check the result of lzo1x_optimize
change compilations logic to detect album_artist set to 'Various' or 'Various Artists'