New optional EXIT_STATUS argument for 'quit'

Also removed the 'reload' message because of its uselessness.

README.md

@@ -206,10 +206,7 @@ The following messages are handled:
     reload_settings
         Reload the default settings.
 
-    reload
-        Reload the autostart file and the default settings.
-
-    quit
+    quit [EXIT_STATUS]
         Quit.
 
 ## Settings

bspwm.1

@@ -229,10 +229,7 @@ Reload the autostart file.
 .BI reload_settings
 Reload the default settings.
 .TP
-.BI reload
-Reload the autostart file and the default settings.
-.TP
-.BI quit
+.BI quit " [EXIT_STATUS]"
 Quit.
 .SH SETTINGS
 Colors are either

bspwm.c

@@ -139,6 +139,7 @@ void setup(void)
     last_entered = XCB_NONE;
     split_mode = MODE_AUTOMATIC;
     visible = true;
+    exit_status = 0;
 }
 
 int main(int argc, char *argv[])
@@ -250,5 +251,5 @@ int main(int argc, char *argv[])
     free(ewmh);
     xcb_flush(dpy);
     xcb_disconnect(dpy);
-    return 0;
+    return exit_status;
 }

bspwm.h

@@ -28,6 +28,7 @@ rule_t *rule_head;
 pointer_state_t *frozen_pointer;
 xcb_point_t pointer_position;
 xcb_window_t last_entered;
+int exit_status;
 
 bool visible;
 bool running;

messages.c

@@ -343,14 +343,14 @@ void process_message(char *msg, char *rsp)
             return;
     } else if (strcmp(cmd, "adopt_orphans") == 0) {
         adopt_orphans();
-    } else if (strcmp(cmd, "reload") == 0) {
-        load_settings();
-        run_autostart();
     } else if (strcmp(cmd, "reload_autostart") == 0) {
         run_autostart();
     } else if (strcmp(cmd, "reload_settings") == 0) {
         load_settings();
     } else if (strcmp(cmd, "quit") == 0) {
+        char *arg = strtok(NULL, TOK_SEP);
+        if (arg != NULL)
+            sscanf(arg, "%i", &exit_status);
         quit();
         return;
     } else {