1. Rearraged the source tree

2. modified the autotools scripts, "make distcheck" is ok now

lib/searpc-utils.h

@@ -0,0 +1,46 @@
+#ifndef SEARPC_UTILS_H
+#define SEARPC_UTILS_H
+
+#include <json-glib/json-glib.h>
+
+inline static const gchar *
+json_object_get_string_or_null_member (JsonObject *object, const gchar *member_name)
+{
+    if (!json_object_get_null_member (object, member_name))
+        return json_object_get_string_member (object, member_name);
+    else
+        return NULL;
+}
+
+inline static void
+json_object_set_string_or_null_member (JsonObject *object,
+                                       const gchar *member_name,
+                                       const gchar *value)
+{
+    if (value)
+        json_object_set_string_member (object, member_name, value);
+    else
+        json_object_set_null_member (object, member_name);
+}
+
+inline static const gchar *
+json_array_get_string_or_null_element (JsonArray *array, guint index)
+{
+    if (!json_array_get_null_element (array, index))
+        return json_array_get_string_element (array, index);
+    else
+        return NULL;
+}
+
+inline static void
+json_array_add_string_or_null_element (JsonArray *array, const gchar *value)
+{
+    if (value)
+        json_array_add_string_element (array, value);
+    else
+        json_array_add_null_element (array);
+}
+
+
+
+#endif