Log Message:
libtorrent-rasterbar: updated to 2.0.8

libtorrent-2.0.8

fix uTP streams timing out instead of closing cleanly
add write_torrent_file_buf() overload for generating .torrent files
add create_torrent::generate_buf() function to generate into a buffer
fix copy_file when the file ends with a sparse region
uTP performance, fix packet loss when sending is stalled
fix trackers being stuck after session pause/resume
fix bug in hash_picker with empty files
uTP performance, prevent premature timeouts/resends
add option to not memory map files below a certain size
settings_pack now returns default values when queried for missing settings
fix copy_file fall-back when SEEK_HOL/SEEK_DATA is not supported
improve error reporting from file copy and move
tweak pad file placement to match reference implementation (tail-padding)
uTP performance, more lenient nagle's algorithm to always allow one outstanding \ 
undersized packet
uTP performance, piggy-back held back undersized packet with ACKs
uTP performance, don't send redundant deferred ACKs
support incoming SOCKS5 packets with hostnames as source address, for UDP trackers
ignore duplicate network interface change notifications on linux
fix total_want/want accounting when forcing a recheck
fix merging metadata with magnet links added on top of existing torrents
add torrent_flag to default all file priorities to dont_download
fix &so= feature in magnet links
improve compatibility of SOCKS5 UDP ASSOCIATE
fix madvise range for flushing cache in mmap_storage
open files with no_cache set in O_SYNC mode