Add a start hook that can be setup to call a function in the context of a new thread before the new threads main() has been called.

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5571 42af7a65-404d-4744-a932-0658087f49c3

nuttx/sched/group_setupstreams.c

@@ -46,6 +46,8 @@
 #include <nuttx/net/net.h>
 #include <nuttx/lib.h>
 
+#include "group_internal.h"
+
 /* Make sure that there are file or socket descriptors in the system and
  * that some number of streams have been configured.
  */