sysutils/xentools33 fails to build

[Sad Clouds <cryintothebluesky%googlemail.com@localhost>]

Building xentools33 from current pkgsrc fails with the following error message. 
It looks like newer 'texi2html' expects a different command line argument?? 

texi2html -monolithic -number qemu-doc.texi
Option number is ambiguous (number-footnotes, number-sections)
Try `texi2html --help' for more information.
gmake[2]: *** [qemu-doc.html] Error 2
gmake[2]: Leaving directory 
`/opt/pkg.obj/sysutils/xentools33/work.atom/xen-3.3.2/tools/ioemu'
gmake[1]: *** [subdir-all-ioemu] Error 2
gmake[1]: Leaving directory 
`/opt/pkg.obj/sysutils/xentools33/work.atom/xen-3.3.2/tools'
gmake: *** [subdirs-all] Error 2
*** Error code 2

Stop.
make: stopped in /opt/pkgsrc/sysutils/xentools33
*** Error code 1