fixed two warnings.

* top: unused variable, quick fix only.
* keymap: redefinition on some host systems (Ubuntu for instance).

src/bin/keymap/Keymap.h

@@ -17,7 +17,9 @@
 #endif
 
 #include <stdio.h>
-#define __USE_GNU
+#ifndef __USE_GNU
+#	define __USE_GNU
+#endif
 #include <regex.h>
 
 

src/bin/top.c

@@ -361,7 +361,7 @@ gather(
 	team_info	tm;
 	thread_time_list_t times;
 	int i;
-	system_info info;
+	//system_info info;
 	bigtime_t	oldLastMeasure;
 
 	i = 0;