Fix locations of headers.

svn path=/trunk/icecast/; revision=3439

src/config.c

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <xmlmemory.h>
-#include <parser.h>
+#include <libxml/xmlmemory.h>
+#include <libxml/parser.h>
 #include "config.h"
 
 #define CONFIG_DEFAULT_LOCATION "Earth"

src/stats.c

@@ -3,9 +3,9 @@
 #include <stdlib.h>
 #include <stdarg.h>
 
-#include <xmlmemory.h>
-#include <parser.h>
-#include <tree.h>
+#include <libxml/xmlmemory.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
 
 #include <thread/thread.h>
 #include <avl/avl.h>