Use images in Emacs Lisp Intro manual (bug#80519)

* doc/lispintro/emacs-lisp-intro.texi (Lists diagrammed)
(Symbols as Chest, kill-ring-yank-pointer, lambda): Use @image and
remove ASCII-art diagrams, which are now on separate *.txt files.
(header): Remove print-postscript-figures and its commentary.

* doc/lispintro/Makefile.in (auxfiles): New file list.
(${buildinfodir}/%.txt, ${buildinfodir}/%.png): New targets.
(${buildinfodir}/eintr.info): Depend on ${auxfiles}.
(infoclean): Remove ${auxfiles}.

* doc/lispintro/cons-1.png:
* doc/lispintro/cons-1.txt:
* doc/lispintro/cons-2.png:
* doc/lispintro/cons-2.txt:
* doc/lispintro/cons-2a.png:
* doc/lispintro/cons-2a.txt:
* doc/lispintro/cons-3.png:
* doc/lispintro/cons-3.txt:
* doc/lispintro/cons-4.png:
* doc/lispintro/cons-4.txt:
* doc/lispintro/cons-5.png:
* doc/lispintro/cons-5.txt:
* doc/lispintro/drawers.png:
* doc/lispintro/drawers.txt:
* doc/lispintro/lambda-1.png:
* doc/lispintro/lambda-1.txt:
* doc/lispintro/lambda-2.png:
* doc/lispintro/lambda-2.txt:
* doc/lispintro/lambda-3.png:
* doc/lispintro/lambda-3.txt: New files, from Matto Fransen
<matto@matto.nl>.

1 files changed, 4 insertions, 0 deletions

diff --git a/doc/lispintro/lambda-3.txt b/doc/lispintro/lambda-3.txt
new file mode 100644
index 00000000000..20e48dc2e56
--- /dev/null
+++ b/doc/lispintro/lambda-3.txt
@@ -0,0 +1,4 @@
+     ((lambda (arg) (/ arg 50)) 100)
+      \______________________/  \_/
+                  |              |
+         anonymous function   argument