Revert "Apply <ftp://ftp.math.s.chiba-u.ac.jp/emacs/emacs-24.3-mac-4.1.tar.gz>."

This reverts commit 76e68e2bda045d95fd9a3334635d02ac7e43df67.
Apply <ftp://ftp.math.s.chiba-u.ac.jp/emacs/emacs-24.3-mac-4.2.tar.gz>.
* doc/emacs/programs.texi (Semantic): Fix typo.
* progmodes/python.el (python-indent-block-enders): Add break,
continue and raise keywords.
* progmodes/python.el: Fix typo in commentary.
* doc/lispref/functions.texi (Anonymous Functions): Put back '
over-enthusiastically removed 2012-10-23.
* doc/lispref/variables.texi (Lexical Binding): Fix typo.
* doc/lispref/loading.texi (Autoload): Fix typo.
* configure.ac: Include X11/X.h when testing for Xft.h.
Auto-commit of generated files.
* doc/misc/eshell.texi: Fix cross-references to other manuals.
* doc/emacs/files.texi: Comment.
* doc/misc/eudc.texi (Overview, Creating BBDB Records): Restrict bbdb cross-ref
to info output.  It's not very important, and gives broken links in
the html version.
Revert previous change
* doc/emacs/rmail.texi: Comment
Manual fixes re describe-syntax

* doc/emacs/help.texi (Misc Help): Index describe-syntax.

* doc/lispref/syntax.texi (Syntax Table Functions): Mention describe-syntax.
Fix two doc/emacs cross-references

* doc/emacs/maintaining.texi (EDE): Fix cross-reference.

* doc/emacs/programs.texi (Program Modes): Fix emacs-xtra reference.
* configure.ac (emacs_broken_SIGIO): Set on gnu-kfreebsd (tiny change)
http://bugs.debian.org/712974
Fix some doc/ cross-references

* doc/lispintro/emacs-lisp-intro.texi (edebug):
* doc/lispref/debugging.texi (Debugging):
* doc/lispref/files.texi (File Attributes, Changing Files):
* doc/misc/bovine.texi (top):
* doc/misc/cc-mode.texi (AWK Mode Font Locking):
* doc/misc/mh-e.texi (Preface):
* doc/misc/url.texi (URI Parsing):
Fix cross-references to other manuals.

* doc/lispref/package.texi (Package Archives): Fix @url call.
* lisp/subr.el (y-or-n-p): Handle empty prompts.