bd_select_title() now selects a playlist index rather than an m2ts file.
The playlist must be initialized with a call to bd_get_titles() prior
to selecting a title.  bd_read() now works with read sizes other than 6144.
bd_seek() seeks to a position relative to the mpls rather than the m2ts.

Basic usage is now:

bd = bd_open(device, key_path);
num_titles = bd_get_titles(bd, TITLES_ALL);
// determine title index to play by presenting user with 
// information obtained through bd_get_title_info()
bd_select_title(bd, title_idx);
while ((len = bd_read(bd, buf, buf_sz)) > 0)
{
	// play buf
}