Move copy-tree to (ice-9 copy-tree); deprecate main binding

* doc/ref/api-data.texi (List Constructors):
* doc/ref/api-utility.texi (Copying): Update docs to mention module.
* libguile.h: Remove trees.h inclusion.
* libguile/Makefile.am (libguile_@GUILE_EFFECTIVE_VERSION@_la_SOURCES):
  (DOT_X_FILES, DOT_DOC_FILES, modinclude_HEADERS): Remove trees.c,
  trees.h, and related files.
* libguile/init.c (scm_i_init_guile): Remove trees.h and the
  scm_init_trees call.
* libguile/trees.c:
* libguile/trees.h: Remove.
* module/Makefile.am (SOURCES): Add ice-9/copy-tree.scm.
* module/ice-9/copy-tree.scm: New file.
* module/ice-9/deprecated.scm (copy-tree*): Export as copy-tree,
  proxying to (ice-9 copy-tree).
* module/system/repl/common.scm:
* module/web/client.scm:
* test-suite/tests/elisp.test:
* test-suite/tests/srfi-1.test:
* module/oop/goops/save.scm: Use (ice-9 copy-tree).
* test-suite/Makefile.am (SCM_TESTS): Add copy-tree.test.
* test-suite/tests/copy-tree.test: New file; test pulled from
  eval.test.
* libguile/deprecated.h:
* libguile/deprecated.c (scm_copy_tree): Deprecate.

test-suite/tests/copy-tree.test

@@ -0,0 +1,33 @@
+;;;; Copyright (C) 2000-2001,2003-2015,2017,2019,2020
+;;;;   Free Software Foundation, Inc.
+;;;;
+;;;; This library is free software; you can redistribute it and/or
+;;;; modify it under the terms of the GNU Lesser General Public
+;;;; License as published by the Free Software Foundation; either
+;;;; version 3 of the License, or (at your option) any later version.
+;;;; 
+;;;; This library is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;;; Lesser General Public License for more details.
+;;;; 
+;;;; You should have received a copy of the GNU Lesser General Public
+;;;; License along with this library; if not, write to the Free Software
+;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+(define-module (test-suite test-copy-tree)
+  :use-module (test-suite lib)
+  :use-module (ice-9 copy-tree))
+
+(with-test-prefix "copy-tree"
+  (pass-if "(#t . #(#t))"
+    (let* ((foo (cons #t (vector #t)))
+           (bar (copy-tree foo)))
+      (vector-set! (cdr foo) 0 #f)
+      (equal? bar '(#t . #(#t)))))
+
+  (pass-if-exception "circular lists in forms"
+      '(wrong-type-arg . "")
+    (let ((foo (list #f)))
+      (set-cdr! foo foo)
+      (copy-tree foo))))

test-suite/tests/elisp.test

@@ -1,5 +1,5 @@
 ;;;; elisp.test --- tests guile's elisp support     -*- scheme -*-
-;;;; Copyright (C) 2002, 2003, 2006, 2009, 2010 Free Software Foundation, Inc.
+;;;; Copyright (C) 2002, 2003, 2006, 2009, 2010, 2020 Free Software Foundation, Inc.
 ;;;;
 ;;;; This library is free software; you can redistribute it and/or
 ;;;; modify it under the terms of the GNU Lesser General Public
@@ -16,6 +16,7 @@
 ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
 (define-module (test-suite test-elisp)
+  #:use-module (ice-9 copy-tree)
   #:use-module (test-suite lib)
   #:use-module (system base compile)
   #:use-module (ice-9 weak-vector))

test-suite/tests/eval.test

@@ -1,5 +1,5 @@
 ;;;; eval.test --- tests guile's evaluator     -*- scheme -*-
-;;;; Copyright (C) 2000-2001,2003-2015,2017,2019
+;;;; Copyright (C) 2000-2001,2003-2015,2017,2019,2020
 ;;;;   Free Software Foundation, Inc.
 ;;;;
 ;;;; This library is free software; you can redistribute it and/or
@@ -50,21 +50,6 @@
 ;;;
 
 (with-test-prefix "memoization"
-
-  (with-test-prefix "copy-tree"
-
-    (pass-if "(#t . #(#t))"
-      (let* ((foo (cons #t (vector #t)))
-             (bar (copy-tree foo)))
-        (vector-set! (cdr foo) 0 #f)
-        (equal? bar '(#t . #(#t)))))
-
-    (pass-if-exception "circular lists in forms"
-      exception:wrong-type-arg
-      (let ((foo (list #f)))
-        (set-cdr! foo foo)
-        (copy-tree foo))))
-
   (pass-if "transparency"
     (let ((x '(begin 1)))
       (eval x (current-module))

test-suite/tests/srfi-1.test

@@ -1,6 +1,6 @@
 ;;;; srfi-1.test --- Test suite for Guile's SRFI-1 functions. -*- scheme -*-
 ;;;;
-;;;; Copyright 2003-2006, 2008-2011, 2014 Free Software Foundation, Inc.
+;;;; Copyright 2003-2006, 2008-2011, 2014, 2020 Free Software Foundation, Inc.
 ;;;;
 ;;;; This library is free software; you can redistribute it and/or
 ;;;; modify it under the terms of the GNU Lesser General Public
@@ -18,6 +18,7 @@
 
 (define-module (test-srfi-1)
   #:use-module (test-suite lib)
+  #:use-module (ice-9 copy-tree)
   #:use-module (srfi srfi-1))