Ctrl+rightclick now pops up a context menu in Unix PuTTY and pterm.

This menu is not yet fully populated, but it has an About box (yet
another licence location :-/ ) and supports the new configurable
specials menu (thus making Unix PuTTY do one tiny thing which
OpenSSH-in-a-pterm can't :-).

[originally from svn r3062]

unix/ptermm.c

@@ -7,6 +7,37 @@
 
 #include "putty.h"
 
+const char *const appname = "pterm";
+
+/*
+ * Another bunch of temporary stub functions. These ones will want
+ * removing by means of implementing them properly: libcharset
+ * should invent its own sensible format for codepage names and a
+ * means of enumerating them, and printer_enum needs to be dealt
+ * with somehow or other too.
+ */
+
+char *cp_name(int codepage)
+{
+    return "";
+}
+char *cp_enumerate(int index)
+{
+    return NULL;
+}
+int decode_codepage(char *cp_name)
+{
+    return -2;
+}
+
+printer_enum *printer_start_enum(int *nprinters_ptr) {
+    *nprinters_ptr = 0;
+    return NULL;
+}
+char *printer_get_name(printer_enum *pe, int i) { return NULL;
+}
+void printer_finish_enum(printer_enum *pe) { }
+
 Backend *select_backend(Config *cfg)
 {
     return &pty_backend;
@@ -17,11 +48,6 @@ int cfgbox(Config *cfg)
     return 1;			       /* no-op in pterm */
 }
 
-void fatal_message_box(void *window, char *msg)
-{
-    /* also a no-op in pterm */
-}
-
 void cleanup_exit(int code)
 {
     exit(code);