Rename some functions in database.h
Rename some functions in database.h

This fixes compatability with 14989159 of libmpdclient

The following functions were renamed:
mpd_send_listall        -> mpd_send_list_all
mpd_send_listallinfo    -> mpd_send_list_all_meta
mpd_send_lsinfo         -> mpd_send_ls_meta

alip/luampdclient,alip/luampdclient