lo_address_get_protocol() were added. Tests for
lo_address_get_* were added to the test tool.
Several compiler warnings were fixed. The address
for package bug reports was changed. lo_blob_new()
was changed to take const void*. The getnameinfo()
method of getting hostname is disabled when IPv6
is disabled. A Unix server socket is now unlinked
when it is closed. The size of a Unix socket path
is checked properly.