[xml/sgml-pkgs] Bug#643026: Bug#643026: please add multi-arch support for libxml2

[Riku Voipio]

block 643026 with 633264
block 643026 with 633319
block 643026 with 631981
block 643026 with 633260
block 643026 with 633273
block 643026 with 633265
block 643026 with 620766
thanks

The rest foo.la (tulip, illuminator, subtitleeditor, opensync-plugin*) that referred 
to libxml2.la were lafiles unused by anyone (no reverse dependencies). That is also
probably true for the python-* bugs blocking above. The only really important bug above
is the gstreamer one, eg #633319

Cheers,
Riku