master 19df5e7 1/2: Update admins make-manuals for new output variable

[Glenn Morris]

branch: master
commit 19df5e78692f4bf496407c4b93cd580933d90ad7
Author: Glenn Morris <rgm@gnu.org>
Commit: Glenn Morris <rgm@gnu.org>

    Update admins make-manuals for new output variable
    
    * admin/admin.el (make-manuals-dist-output-variables):
    Add abs_top_builddir.
---
 admin/admin.el | 1 +
 1 file changed, 1 insertion(+)

diff --git a/admin/admin.el b/admin/admin.el
index d032c1c..704c38d 100644
--- a/admin/admin.el
+++ b/admin/admin.el
@@ -665,6 +665,7 @@ style=\"text-align:left\">")
 
 (defconst make-manuals-dist-output-variables
   '(("@\\(top_\\)?srcdir@" . ".")      ; top_srcdir is wrong, but not used
+    ("@abs_top_builddir@" . "../../")   ; only for in-tree builds
     ("^\\(\\(?:texinfo\\|buildinfo\\|emacs\\)dir *=\\).*" . "\\1 .")
     ("^\\(clean:.*\\)" . "\\1 infoclean")
     ("@MAKEINFO@" . "makeinfo")