Revamp the auto-layout of PuTTY configuration box controls. They are

now auto-laid-out at runtime instead of compile time. Byebye
win_res.inp and mkres.c; byebye most of win_res.rc; hello a whole
new load of control-creation functions in windlg.c. Also, now that
we're creating the tab control at runtime, we can check to see if it
succeeded and use an alternative if so. This _should_ enable the
config box to work on Win32s, although at the time of checkin that's
untested.

[originally from svn r673]

win_res.h

@@ -28,7 +28,10 @@
 #define IDA_LICENCE     1005
 
 #define IDC_TAB         1001
-#define IDC_ABOUT       1002
+#define IDC_TABSTATIC1  1002
+#define IDC_TABSTATIC2  1003
+#define IDC_TABLIST     1004
+#define IDC_ABOUT       1005
 
 #define IDC0_HOSTSTATIC 1001
 #define IDC0_HOST       1002