liblo: Update to 0.30 and remove maintainer

Add PKG_BUILD_PARALLEL for faster compilation.

Small cleanups.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/liblo/patches/001-fix-musl-include.patch

@@ -1,11 +0,0 @@
---- a/src/server.c
-+++ b/src/server.c
-@@ -48,7 +48,7 @@
- #include <netdb.h>
- #include <sys/socket.h>
- #ifdef HAVE_POLL
--#include <sys/poll.h>
-+#include <poll.h>
- #endif
- #include <sys/un.h>
- #include <arpa/inet.h>