patch 8.1.1531: clipboard type name is inconsistent

Problem:    Clipboard type name is inconsistent.
Solution:   Rename VimClipboard to Clipboard_T.
diff --git a/src/proto/os_qnx.pro b/src/proto/os_qnx.pro
index 89a250f..a3fab62 100644
--- a/src/proto/os_qnx.pro
+++ b/src/proto/os_qnx.pro
@@ -1,8 +1,8 @@
 /* os_qnx.c */
 void qnx_init(void);
 void qnx_clip_init (void);
-int clip_mch_own_selection(VimClipboard *cbd);
-void clip_mch_lose_selection(VimClipboard *cbd);
-void clip_mch_request_selection(VimClipboard *cbd);
-void clip_mch_set_selection(VimClipboard *cbd);
+int clip_mch_own_selection(Clipboard_T *cbd);
+void clip_mch_lose_selection(Clipboard_T *cbd);
+void clip_mch_request_selection(Clipboard_T *cbd);
+void clip_mch_set_selection(Clipboard_T *cbd);
 /* vim: set ft=c : */