Retired the #ifdef DUMP_PACKETS stuff in ssh.c because I'm utterly

sick of recompiling to enable packet dumps. SSH packet dumping is
now provided as a logging option, and dumps to putty.log like all
the other logging options. While I'm at it I cleaned up the format
so that packet types are translated into strings for easy browsing.
POSSIBLE SIDE EFFECT: in the course of this work I had to re-enable
the SSH1 packet length checks which it turns out hadn't actually
been active for some time, so it's possible things might break as a
result. If need be I can always disable those checks for the 0.52
release and think about it more carefully later.

[originally from svn r1493]

window.c

@@ -632,17 +632,17 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
      */
     set_input_locale(GetKeyboardLayout(0));
 
+    /*
+     * Open the initial log file if there is one.
+     */
+    logfopen();
+
     /*
      * Finally show the window!
      */
     ShowWindow(hwnd, show);
     SetForegroundWindow(hwnd);
 
-    /*
-     * Open the initial log file if there is one.
-     */
-    logfopen();
-
     /*
      * Set the palette up.
      */