Restored events locale setting for output.

tests/events.c

@@ -37,6 +37,7 @@
 #include <stdlib.h>
 #include <ctype.h>
 #include <string.h>
+#include <locale.h>
 
 #include "getopt.h"
 
@@ -442,6 +443,8 @@ int main(int argc, char** argv)
     GLFWmonitor* monitor = NULL;
     int ch, i, width, height, count = 1;
 
+    setlocale(LC_ALL, "");
+
     glfwSetErrorCallback(error_callback);
 
     if (!glfwInit())