Break out the broom for some cleanup work

Maintain the MAINTAINERS file. Removed src/plugins/*.am listings. Added
a couple of plugins.

Add vlib_process_create (vlib_main_t *vm, char *name,
                         vlib_node_function_t *f, u32 log2_n_stack_bytes);
/** @brief Create a vlib process
 *  @param vm &vlib_global_main
 *  @param f the process node function
 *  @param log2_n_stack_bytes size of the process stack, defaults to 16K
 *  @return newly-create node index
 *  @warning call only on the main thread. Barrier sync required.
 */

This function makes it easy to spin up periodic processes when features
are enabled for the first time. That coding pattern is highly recommended.

Update the emacs-lisp plugin generator to use vlib_process_create,
instead of generating static periodic process nodes.

Change-Id: Icda33e93b9034779d3a3e228cd1110af14b058a5
Signed-off-by: Dave Barach <dave@barachs.net>
diff --git a/extras/emacs/plugin-h-skel.el b/extras/emacs/plugin-h-skel.el
index b3fa646..2165510 100644
--- a/extras/emacs/plugin-h-skel.el
+++ b/extras/emacs/plugin-h-skel.el
@@ -24,7 +24,7 @@
 '(setq capital-oh-en "ON")
 "
 /*
- * " plugin-name ".h - skeleton vpp engine plug-in header file 
+ * " plugin-name ".h - skeleton vpp engine plug-in header file
  *
  * Copyright (c) <current-year> <your-organization>
  * Licensed under the Apache License, Version 2.0 (the \"License\");
@@ -55,6 +55,8 @@
 
     /* on/off switch for the periodic function */
     u8 periodic_timer_enabled;
+    /* Node index, non-zero if the periodic process has been created */
+    u32 periodic_node_index;
 
     /* convenience */
     vlib_main_t * vlib_main;
@@ -72,6 +74,8 @@
 #define " PLUGIN-NAME "_EVENT2 2
 #define " PLUGIN-NAME "_EVENT_PERIODIC_ENABLE_DISABLE 3
 
+void " plugin-name "_create_periodic_process (" plugin-name "_main_t *);
+
 #endif /* __included_" plugin-name "_h__ */
 
 /*