Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Upgrade to GNU texinfo 4.0

$Id$ -> $FreeBSD$

Fixed breakage of cross-compiling in previous commit. The installed
version of makeinfo must be used. The fix breaks bootstrapping of
texinfo by a simple `make' in the texinfo directory -- `make world'
must be used to bootstrap it if you don't know how to do it manually.

Fixed at least 7 style bugs in previous commit.

Update this area for Texinfo-3.12.
Submitted by: lkoeller@cc.fh-lippe.de

Fixed bugs involving paths:
- LDADD was wrong for non-uniform obj trees.
- DPADD was wrong for separate obj tres.

Cleaned up nearby messes, mostly ones invoving paths:
- -I../libtxi was useless.
- there were too many redefinitions and too many different names for the
same paths.
- use INTERNALLIB* to simplify libtxi/Makefile.

Revert $FreeBSD$ to $Id$

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Don't conflict with INFODIR?=${SHAREDIR}/info from the system Makefiles

Clearing out the old stuff, its all in contrib now.

Bring in my changes for removing the pestilent obj links (unless you
really want them) from /usr/src. This is the final version of the
patches, incorporating the feedback I've received from -current.

Fix path to makeinfo.

Infopages cleanup