HevConfig: Bump up to 2.15.0.

Author: heiher

src/hev-config-const.h

@@ -11,8 +11,8 @@
 #define __HEV_CONFIG_CONST_H__
 
 #define MAJOR_VERSION (2)
-#define MINOR_VERSION (14)
-#define MICRO_VERSION (4)
+#define MINOR_VERSION (15)
+#define MICRO_VERSION (0)
 
 static const int UDP_BUF_SIZE = 1500;
 static const int UDP_POOL_SIZE = 512;