Don't use local settings (LC_PAPER), disable paper size autodetection.

diff --git a/docbook.am b/docbook.am
index bba4d54..7425a1c 100644
--- a/docbook.am
+++ b/docbook.am
@@ -47,7 +47,8 @@ shelf_DATA += $(docbook:.xml=.txt)
 endif HAVE_XMLTO_TEXT
 
 if HAVE_FOP
-XMLTO_FO_IMAGEPATH_FLAGS = --stringparam img.src.path=$(abs_builddir)/
+XMLTO_FO_IMAGEPATH_FLAGS = --stringparam img.src.path=$(abs_builddir)/ \
+	--noautosize
 XMLTO_PDF_OLINK_FLAGS = \
 	--stringparam target.database.document=$(XORG_SGML_PATH)/X11/dbs/masterdb.pdf.xml \
 	--stringparam current.docid="$(<:.xml=)"