use only relative paths for better compatibility with mixed Cygwin/NTEmacs installations

* UTILITIES/org-fixup.el(org-make-org-install): Use relative filenames
  throughout, and query Emacs for directory names where a full path is
  required.  This avoids Cygwin/POSIX paths being misinterpreted by a
  stock NTEmacs.  Use the same regex as (org-reload) for enumerating
  the files to byte-compile.

* default.mk: Factor out standard load-path for Emacs started in lisp/
  into BATCHL and use this in defaults.  Make all paths to be
  interpreted by Emacs relative so Cygwin and NTEmacs can coexist.

UTILITIES/org-fixup.el

@@ -54,18 +54,18 @@
     (toggle-read-only 0)
     (write-file "org-version.el")))
 
-(defun org-make-org-install (absfile)
+(defun org-make-org-install ()
   (with-temp-buffer
-    (set-visited-file-name absfile)
+    (set-visited-file-name "org-install.el")
     (insert ";;; org-install.el --- autogenerated file, do not edit\n;;\n;;; Code:\n")
-    (let ((files (directory-files (file-name-directory absfile) 'full "^[^.#~]*\\.el$")))
+    (let ((files (directory-files default-directory nil "^\\(org\\|ob\\)\\(-.*\\)?\\.el$")))
       (mapc (lambda (f) (generate-file-autoloads f)) files))
     (insert "\f\n(provide 'org-install)\n")
     (insert "\f\n;; Local Variables:\n;; version-control: never\n")
     (insert ";; no-byte-compile: t\n;; no-update-autoloads: t\n")
     (insert ";; coding: utf-8\n;; End:\n;;; org-install.el ends here\n")
     (toggle-read-only 0)
-    (write-file absfile)))
+    (save-buffer)))
 
 (defun org-make-autoloads ()
   (let* ((origin default-directory)
@@ -79,7 +79,7 @@
 	  (cd dirlisp)
 	  (org-fixup)
 	  (org-make-org-version (org-release) (org-git-version) dirodt)
-	  (org-make-org-install (concat dirlisp "org-install.el")))
+	  (org-make-org-install))
       (cd origin))))
 
 (defun org-make-autoloads-compile (&rest force)

default.mk

@@ -47,8 +47,8 @@ req-ob-lang = --eval '(require '"'"'ob-$(ob-lang))'
 req-extra   = --eval '(require '"'"'$(req))'
 BTEST	= $(BATCH) \
 	  $(BTEST_PRE) \
-	  --eval '(add-to-list '"'"'load-path "lisp")' \
+	  --eval '(add-to-list '"'"'load-path "./lisp")' \
-	  --eval '(add-to-list '"'"'load-path "testing")' \
+	  --eval '(add-to-list '"'"'load-path "./testing")' \
 	  $(BTEST_POST) \
 	  -l org-install.el \
 	  -l testing/org-test.el \
@@ -58,12 +58,27 @@ BTEST	= $(BATCH) \
 	  -f org-test-run-batch-tests
 
 # Using emacs in batch mode.
-BATCH	= $(EMACS) -batch -Q
 # BATCH = $(EMACS) -batch -vanilla # XEmacs
+BATCH	= $(EMACS) -batch -Q
+
+# Emacs must be started in lisp directory
+BATCHL	= $(BATCH) \
+	  --eval '(add-to-list '"'"'load-path ".")'
+
+# How to generate org-install.el
+MAKE_ORG_INSTALL = $(BATCHL) \
+	  --eval '(load "org-compat.el")' \
+	  --eval '(load "../UTILITIES/org-fixup.el")' \
+	  --eval '(org-make-org-install)'
+
+# How to generate org-version.el
+MAKE_ORG_VERSION = $(BATCHL) \
+	  --eval '(load "org-compat.el")' \
+	  --eval '(load "../UTILITIES/org-fixup.el")' \
+	  --eval '(org-make-org-version "$(ORGVERSION)" "$(GITVERSION)" "$(datadir)")'
 
 # How to byte-compile the whole source directory
-ELCDIR	= $(BATCH) \
+ELCDIR	= $(BATCHL) \
-		--eval '(add-to-list '"'"'load-path ".")' \
 	  --eval '(batch-byte-recompile-directory 0)'
 
 # How to make a pdf file from a texinfo file
@@ -104,17 +119,3 @@ SUDO	= sudo
 # Name of the program to install info files
 # INSTALL_INFO = ginstall-info # Debian: avoid harmless warning message
 INSTALL_INFO = install-info
-
-# How to generate org-install.el
-MAKE_ORG_INSTALL = $(BATCH) \
-	--eval '(add-to-list '"'"'load-path ".")' \
-	--eval '(load "org-compat.el")' \
-	--eval '(load "../UTILITIES/org-fixup.el")' \
-	--eval '(org-make-org-install "$(CURDIR)/lisp/org-install.el")'
-
-# How to generate org-version.el
-MAKE_ORG_VERSION = $(BATCH) \
-	--eval '(add-to-list '"'"'load-path ".")' \
-	--eval '(load "org-compat.el")' \
-	--eval '(load "../UTILITIES/org-fixup.el")' \
-	--eval '(org-make-org-version "$(ORGVERSION)" "$(GITVERSION)" "$(datadir)")'