Log message:
Rework emacs.mk:

1) Simplify the way how an emacs version is picked when no emacs
   is installed, but a user try to install an Emacs Lisp package.
   Just pick up the version set as EMACS_TYPE than searching for
   versions already installed etc.  If the EMACS_TYPE version is
   not supported by the Emacs Lisp Package, just fail.  EMACS_TYPE
   be default to GNU Emacs 21.

   (In other words, users should set EMACS_TYPE as they want.
   Otherwise GNU Emacs 21 is used.)

2) All Emacs Lisp Packages *must* prepend EMACS_PKGNAME_PREFIX to
   a) the PKGNAME itself, and b) PKGNAME in its dependency lines.
   EMACS_PKGNAME_PREFIX is expanded to "xemacs-" when XEmacs is
   used.  This keeps dependency graph of Emacs-Lisp-packages-
   installed-for-XEmacs consistent.

3) Document EMACS_* variables as much as possible.

4) Provide more cookies for PLIST.  Maybe utilized later.

Note that the 2) change doesn't affect the default, GNU Emacs 21
behaviour.  So no version / revision bumps in this commit.

Log message:
Remove USE_GNU_TOOLS and replace with the correct USE_TOOLS definitions:

	USE_GNU_TOOLS	-> USE_TOOLS
	awk		-> gawk
	m4		-> gm4
	make		-> gmake
	sed		-> gsed
	yacc		-> bison

Log message:
Add RMD160 digests

Log message:
Obsoleted by update to 2.3.1.

Log message:
Update to 2.3.1, provided by Hiramatsu Yoshifumi in PR 28434:
Changes:

* lisp/tc-mazegaki.el: C-g can interrupt kana-kanji conversion.

* lisp/tc-is18.el:
* lisp/tc-is19.el:
* lisp/tc-is20.el: fix infinite loop bug.

* lisp/tutc-tbl.el: fix translation table.

* lisp/eelll.el: use colored background in bitmap display mode.

* skkinput3/Makefile.am: merged patches/patch-ab

Log message:
Remove info files entries from PLIST.

Log message:
remove empty conditional

Log message:
replace deprecated USE_GMAKE with USE_GNU_TOOLS+=make.

Log message:
USE_NEW_TEXINFO is unnecessary now.

Log message:
Convert to USE_NEW_TEXINFO.