* Makefile.am (imgdir): New variable.
	(EXTRA_DIST): Move img/README, img/fly.pbm, img/fly.pgm,
	img/fly.ppm, img/lena.pbm, img/lena.pgm, img/lena.ppm,
	img/lena_16.ppm, img/medium.pgm, img/medium.ppm, img/picasso.pbm,
	img/picasso.pgm, img/quite-small.pgm, img/small.pbm,
	img/small.pgm, img/small.ppm, img/squares-lc.pgm, img/squares.pgm,
	img/test.fits, img/tiny.pbm, img/tiny.pgm, img/tiny.ppm and
	img/toto.pbm...
	(dist_img_DATA): ...here (new variable).
	* doc/Makefile.am (EXTRA_DIST): Move $(USER_REFMAN_HTML) and
	$(USER_REFMAN_PDF)...
	(dist_doc_DATA): ...here (new variable).
	* doc/ref_guide/Makefile.am (EXTRA_DIST): Move $(REF_GUIDE_PDF)...
	(dist_doc_DATA): ...here (new variable).
	* doc/tutorial/Makefile.am (EXTRA_DIST): Move $(TUTORIAL_PDF)...
	(dist_doc_DATA): ...here (new variable).
	* doc/white_paper/Makefile.am (EXTRA_DIST): Move
	$(WHITE_PAPER_HTML) and $(WHITE_PAPER_PDF)...
	(dist_doc_DATA): ...here (new variable).
	(clean-local): Replace target by...
	(CLEANFILES): ...this variable.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@4189 4aad255d-cdde-0310-9447-f3009e2ae8c0