libshout: don't use usleep

usleep is deprecated and optionally unavailable with uClibc-ng.

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

libs/libshout/patches/130-usleep.patch

@@ -0,0 +1,14 @@
+--- a/examples/nonblocking.c
++++ b/examples/nonblocking.c
+@@ -70,8 +70,10 @@ int main()
+     if (ret == SHOUTERR_BUSY)
+         printf("Connection pending...\n");
+ 
++    const struct timespec req = {0, 10 * 1000 * 1000};
++    struct timespec rem;
+     while (ret == SHOUTERR_BUSY) {
+-        usleep(10000);
++        nanosleep(&req, &rem);
+         ret = shout_get_connected(shout);
+     }
+