Regularize most strace_prints throughout so that %E is always preceded by a

comma and elminate most uses of "foo = %s" to "foo %s".

winsup/cygwin/tty.cc

@@ -353,7 +353,7 @@ tty::create_inuse (const char *fmt)
 
   shared_name (buf, fmt, ntty);
   h = CreateEvent (&sec_all, TRUE, FALSE, buf);
-  termios_printf ("%s = %p", buf, h);
+  termios_printf ("%s %p", buf, h);
   if (!h)
     termios_printf ("couldn't open inuse event, %E", buf);
   return h;