Change name of temporary file to avoid possible filesystem issues; matches

similar renaming of the @buildno file elsewhere in the Python tree.

Doc/fix.el

 ; load the new texinfo package (2.xx) if not installed by default
 ; (setq load-path (cons "/ufs/guido/lib/emacs/texinfo-2.14" load-path))
-(find-file "@lib.texi")
+(find-file "lib1.texi")
 (texinfo-all-menus-update t)
 (texinfo-all-menus-update t)

Doc/tools/fix.el

 ; load the new texinfo package (2.xx) if not installed by default
 ; (setq load-path (cons "/ufs/guido/lib/emacs/texinfo-2.14" load-path))
-(find-file "@lib.texi")
+(find-file "lib1.texi")
 (texinfo-all-menus-update t)
 (texinfo-all-menus-update t)