Code cleanup and ifdefs required for qurt build

Code that was previously out of tree that was #if 0, is now #ifdef __PX4_QURT.
These changes were required for flight using the qurt build.

Changes include code cleanup for shmem_posix.c.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

src/modules/systemlib/param/param_shmem.c

@@ -72,11 +72,7 @@
 
 #include "shmem.h"
 
-#if 0
-# define debug(fmt, args...)		do { warnx(fmt, ##args); } while(0)
-#else
-# define debug(fmt, args...)		do { } while(0)
-#endif
+#define debug(fmt, args...)		do { } while(0)
 
 #define PARAM_OPEN	open
 #define PARAM_CLOSE	close
@@ -89,7 +85,7 @@ extern struct param_info_s	param_array[];
 extern struct param_info_s	*param_info_base;
 extern struct param_info_s	*param_info_limit;
 #else
-// FIXME - start and end are reversed
+// TODO: start and end are reversed
 static struct param_info_s *param_info_base = (struct param_info_s *) &px4_parameters;
 #endif
 
@@ -240,11 +236,6 @@ param_find_changed(param_t param)
 	param_assert_locked();
 
 	if (param_values != NULL) {
-#if 0	/* utarray_find requires bsearch, not available */
-		struct param_wbuf_s key;
-		key.param = param;
-		s = utarray_find(param_values, &key, param_compare_values);
-#else
 		while ((s = (struct param_wbuf_s *)utarray_next(param_values, s)) != NULL) {
 			if (s->param == param) {
 				break;

src/platforms/posix/px4_layer/shmem_posix.c

@@ -1,7 +1,6 @@
-
 /****************************************************************************
  *
- * Copyright (c) 2015 Ramakrishna Kintada. All rights reserved.
+ * Copyright (c) 2015 Vijay Venkatraman. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -32,7 +31,6 @@
  *
  ****************************************************************************/
 
-
 #include <px4_defines.h>
 #include <px4_posix.h>
 #include <string.h>
@@ -238,7 +236,6 @@ static void update_index_from_shmem(void)
 	release_shmem_lock();
 }
 
-
 static void update_value_from_shmem(param_t param, union param_value_u *value)
 {
 	unsigned int byte_changed, bit_changed;