Add the bsdinstall Handbook chapter.

Thanks to everyone who worked on this.  Special thanks to gavin@ and
wblock@ who worked especially hard to get this in shape and ready for
9.0-RELEASE.

Commit to link this to the build to follow soon.

en_US.ISO8859-1/books/handbook/bsdinstall/Makefile

@@ -0,0 +1,15 @@
+#
+# Build the Handbook with just the content from this chapter.
+#
+# $FreeBSD$
+#
+
+CHAPTERS= 	bsdinstall/chapter.sgml
+
+VPATH=		..
+
+MASTERDOC=	${.CURDIR}/../${DOC}.${DOCBOOKSUFFIX}
+
+DOC_PREFIX?= 	${.CURDIR}/../../../..
+
+.include "../Makefile"