Wayland: Set a proper name for outputs.

glfwGetMonitorName()’s documentation says “this function returns a
human-readable name”, which “typically reflects the make and model of
the monitor”.  We get these two strings in the geometry event, so we
only set the name at this point.

src/wl_monitor.c

@@ -50,11 +50,21 @@ static void geometry(void* data,
                      int32_t transform)
 {
     struct _GLFWmonitor *monitor = data;
+    char* name;
+    size_t nameLength;
 
     monitor->wl.x = x;
     monitor->wl.y = y;
     monitor->widthMM = physicalWidth;
     monitor->heightMM = physicalHeight;
+
+    nameLength = strlen(make) + 1 + strlen(model) + 1;
+    name = realloc(monitor->name, nameLength);
+    if (name)
+    {
+        sprintf(name, "%s %s", make, model);
+        monitor->name = name;
+    }
 }
 
 static void mode(void* data,
@@ -118,10 +128,6 @@ void _glfwAddOutputWayland(uint32_t name, uint32_t version)
 {
     _GLFWmonitor *monitor;
     struct wl_output *output;
-    char nameStr[80];
-
-    memset(nameStr, 0, sizeof(nameStr));
-    snprintf(nameStr, 79, "wl_output@%u", name);
 
     if (version < 2)
     {
@@ -130,7 +136,8 @@ void _glfwAddOutputWayland(uint32_t name, uint32_t version)
         return;
     }
 
-    monitor = _glfwAllocMonitor(nameStr, 0, 0);
+    // The actual name of this output will be set in the geometry handler.
+    monitor = _glfwAllocMonitor(NULL, 0, 0);
 
     output = wl_registry_bind(_glfw.wl.registry,
                               name,