Moved data structures to new collections subfolder

src/libhydra/kernel/kernel_interface.c

@@ -42,7 +42,7 @@
 #include <hydra.h>
 #include <debug.h>
 #include <threading/mutex.h>
-#include <utils/linked_list.h>
+#include <collections/linked_list.h>
 
 typedef struct private_kernel_interface_t private_kernel_interface_t;
 

src/libhydra/kernel/kernel_net.h

@@ -25,7 +25,7 @@
 typedef struct kernel_net_t kernel_net_t;
 typedef enum kernel_address_type_t kernel_address_type_t;
 
-#include <utils/enumerator.h>
+#include <collections/enumerator.h>
 #include <networking/host.h>
 #include <plugins/plugin.h>