update for lib/utils split

Update sources with the new paths

toys/mug/mu-msg-header-view.c

@@ -19,8 +19,8 @@
 
 #include "mu-msg-header-view.h"
 
-#include <mu-str.h>
-#include <mu-date.h>
+#include <utils/mu-str.h>
+#include <utils/mu-date.h>
 
 #if HAVE_CONFIG_H
 #include <config.h>

toys/mug/mug-msg-list-view.c

@@ -20,8 +20,8 @@
 
 #include "mug-msg-list-view.h"
 #include "mu-query.h"
-#include "mu-str.h"
-#include "mu-date.h"
+#include "utils/mu-str.h"
+#include "utils/mu-date.h"
 #include "mu-threader.h"
 
 /* 'private'/'protected' functions */

toys/mug/mug-msg-list-view.h

@@ -21,7 +21,7 @@
 #define __MUG_MSG_LIST_VIEW_H__
 
 #include <gtk/gtk.h>
-#include <mu-util.h>
+#include <utils/mu-util.h>
 
 G_BEGIN_DECLS
 /* convenience macros */

toys/mug/mug-msg-view.c

@@ -24,7 +24,7 @@
 #include "mu-msg-view.h"
 #include "mug-msg-view.h"
 #include "mu-msg.h"
-#include "mu-str.h"
+#include "utils/mu-str.h"
 
 /* 'private'/'protected' functions */
 static void mug_msg_view_class_init (MugMsgViewClass * klass);

toys/mug/mug.c

@@ -25,7 +25,7 @@
 #include <gdk/gdkkeysyms.h>
 #include <string.h>		/* for memset */
 
-#include <mu-util.h>
+#include <utils/mu-util.h>
 #include <mu-store.hh>
 #include <mu-runtime.h>
 #include <mu-index.h>