There have been several complaints against k.org's user-manual
page. The document is generated in ISO-8859-1 by the xsltproc
toolchain (I suspect this is because released docbook.xsl we use
has xsl:output element that says the output is ISO-8859-1) but
server delivers it with "charset=UTF-8", and all h*ll breaks
loose.
This attempts to force UTF-8 on the generating end.
Signed-off-by: Junio C Hamano <gitster@pobox.com>