Permission to upload libxslt 1.1.19

[Mike Hommey <mh@glandium.org>]

Hi,

I'd like to upload a new upstream version of libxslt, which is only a
bugfix released:

Upstream changelog reads as follows:
 - entities within attributes (William Brack)
 - Python detection problem (Joseph Sacco)
 - in-scope namespace bug (Mike Hommey)
 - Result value tree caching bug (William Brack)

All of which, except the python detection problem, have already been
applied to 1.1.18-2 and -3... which means there won't be an shlib bump.
I think it's better to have 1.1.19 in etch than an 1.1.19-looking
1.1.18 for user understanding.

Cheers,

Mike