port update on leaf

[Justin C. Sherrill]

Matt/Hiten - can the libxslt port be updated on leaf.dragonflybsd.org?  I
tried rebuilding the handbook in my leaf account tonight, and I got this
error.

/usr/libexec/ld-elf.so.1: /usr/local/lib/libxslt.so.2: Undefined symbol
"xmlIsBaseCharGroup"
env -i /usr/bin/grep "^<?xml" <
/home/justin/dfcvs/doc/en/books/handbook/../../../en/share/sgml/mirrors.xml.sort.tmp
>
home/justin/dfcvs/doc/en/books/handbook/../../../en/share/sgml/mirrors.xml.sort
*** Error code 1

Smaller items like articles will build without this error, at least.