ob-comint.el: Require `tramp' and declare tramp functions

* ob-comint.el (org-babel-comint-eval-invisibly-and-wait-for-file):
  The tramp macro `with-parsed-tramp-file-name' invokes a bunch of
  tramp functions.  These are now declared and tramp is explicitly
  required.

lisp/ob-comint.el

@@ -33,9 +33,16 @@
 (require 'ob-core)
 (require 'org-compat)
 (require 'comint)
-(eval-when-compile (require 'cl))
-(declare-function with-parsed-tramp-file-name "tramp" (filename var &rest body))
+(eval-when-compile
+  (require 'cl))
+(require 'tramp)
 (declare-function tramp-flush-directory-property "tramp-cache" (vec directory))
+(declare-function tramp-dissect-file-name "tramp" (name &optional nodefault))
+(declare-function tramp-file-name-method "tramp" (vec))
+(declare-function tramp-file-name-user "tramp" (vec))
+(declare-function tramp-file-name-host "tramp" (vec))
+(declare-function tramp-file-name-localname "tramp" (vec))
+(declare-function tramp-file-name-hop "tramp" (vec))
 
 (defun org-babel-comint-buffer-livep (buffer)
   "Check if BUFFER is a comint buffer with a live process."
@@ -151,9 +158,8 @@ FILE exists at end of evaluation."
    (if (= (aref string (1- (length string))) ?\n) string (concat string "\n")))
   ;; From Tramp 2.1.19 the following cache flush is not necessary
   (if (file-remote-p default-directory)
-      (let (v)
-	(with-parsed-tramp-file-name default-directory v
-	  (tramp-flush-directory-property v ""))))
+	(with-parsed-tramp-file-name default-directory nil
+	  (tramp-flush-directory-property v "")))
   (while (not (file-exists-p file)) (sit-for (or period 0.25))))
 
 (provide 'ob-comint)