Babel: fixing compiler warnings

* lisp/ob-R.el (ess-make-buffer-current): declared
  (ess-ask-for-ess-directory): declared
  (ess-local-process-name): declared
* lisp/ob-latex.el (org-babel-latex-tex-to-pdf): capturing free
  variable
* lisp/ob.el (org-edit-src-code): fixing arguments
  (org-edit-src-exit): declared
  (org-outline-overlay-data): declared
  (org-set-outline-overlay-data): declared

lisp/ob-R.el

@@ -36,6 +36,7 @@
 (declare-function orgtbl-to-tsv "org-table" (table params))
 (declare-function R "ext:essd-r" (&optional start-args))
 (declare-function inferior-ess-send-input "ext:ess-inf" ())
+(declare-function ess-make-buffer-current "ext:ess-inf" ())
 
 (defconst org-babel-header-arg-names:R
   '(width height bg units pointsize antialias quality compression
@@ -151,6 +152,7 @@ This function is called by `org-babel-execute-src-block'."
 		(if rownames-p "1" "NULL")))
     (format "%s <- %s" name (org-babel-R-quote-tsv-field value))))
 
+(defvar ess-ask-for-ess-directory)
 (defun org-babel-R-initiate-session (session params)
   "If there is not a current R process then create one."
   (unless (string= session "none")
@@ -169,6 +171,7 @@ This function is called by `org-babel-execute-src-block'."
 	       (buffer-name))))
 	  (current-buffer))))))
 
+(defvar ess-local-process-name)
 (defun org-babel-R-associate-session (session)
   "Associate R code buffer with an R session.
 Make SESSION be the inferior ESS process associated with the

lisp/ob-latex.el

@@ -127,7 +127,7 @@ Extracted from `org-export-as-pdf' in org-latex.el."
          (pdffile (concat base ".pdf"))
          (cmds org-latex-to-pdf-process)
          (outbuf (get-buffer-create "*Org PDF LaTeX Output*"))
-         cmd)
+         output-dir cmd)
     (with-current-buffer outbuf (erase-buffer))
     (message (concat "Processing LaTeX file " file "..."))
     (setq output-dir (file-name-directory file))

lisp/ob.el

@@ -43,9 +43,12 @@
 (declare-function tramp-file-name-host "tramp" (vec))
 (declare-function org-icompleting-read "org" (&rest args))
 (declare-function org-edit-src-code "org-src" 
-                  (&optional context code edit-buffer-name))
+                  (&optional context code edit-buffer-name quietp))
+(declare-function org-edit-src-exit "org-src"  (&optional context))
 (declare-function org-open-at-point "org" (&optional in-emacs reference-buffer))
 (declare-function org-save-outline-visibility "org" (use-markers &rest body))
+(declare-function org-outline-overlay-data "org" (&optional use-markers))
+(declare-function org-set-outline-overlay-data "org" (data))
 (declare-function org-narrow-to-subtree "org" ())
 (declare-function org-entry-get "org" (pom property &optional inherit literal-nil))
 (declare-function org-make-options-regexp "org" (kwds &optional extra))