[dwm] displaydate patch for dwm 5.4

[bill lam]

The original displaydate patch no longers work for dwm 5.4.  I hacked
it and create a new displaydate patch. Please comment if there is any
issue.

-- 
regards,
====================================================
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--- dwm2/dwm.c  2009-02-09 11:53:19.000000000 +0800
+++ dwm/dwm.c   2009-02-09 11:56:07.000000000 +0800
@@ -28,6 +28,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <time.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <X11/cursorfont.h>
@@ -1204,6 +1205,16 @@
        /* main event loop */
        XSync(dpy, False);
        while(running && !XNextEvent(dpy, &ev)) {
+               {
+                       time_t  t;
+ 
+                       t = time(NULL);
+                       strftime(stext, sizeof stext - 1, "%a %e %b, %I:%M%p", 
localtime(&t));
+             /* Depending on the implementation of strftime, stext might
+              * not be null terminated. */
+             stext[sizeof stext - 1] = '\0';
+                       drawbar();
+               }
                if(handler[ev.type])
                        (handler[ev.type])(&ev); /* call handler */
        }