Fix debug mode.

https://sourceforge.net/p/gelide/code/ci/6b91ee5ec3be3e2ce07af40f88d7da461da3c8cb/
--- src/gelide.hpp
+++ src/gelide.hpp
@@ -32,7 +32,7 @@
 #include "gelide_i18n.hpp"
 
 //#define LOCAL_MODE
-//#define DEBUG_MODE
+//#define ENABLE_DEBUG_MODE
 
 
 #ifndef HAVE_CONFIG_H
@@ -42,7 +42,7 @@
 	#define PACKAGE_WEBSITE			"http://gelide.sourceforge.net"
 #endif
 
-#ifdef DEBUG_MODE
+#ifdef ENABLE_DEBUG_MODE
 	#define GELIDE_DEBUG(str) std::cout << "Debug** " << str << std::endl
 	#define GELIDE_WARNING(str) std::cout << "Warning** " << __FILE__ << "[" << __LINE__ << "]: " << str << std::endl
 #else