First iteration of icu, xerces-c and xalan-c ports

[Michael Paddon <michael@paddon.org>]

My first iteration of ports for icu, xerces-c and xalan-c are now available 
for anyone who wants to help test and/or comment.

* ICU is a C/C++ unicode library from IBM. This port is in good shape.
http://www.paddon.org/mwp/software/ports/icu.tar.gz

* Xerces-c is a C++ library for parsing XML. This port requires either ICU or 
iconv (already in ports) for internationalization support. This port is in 
good shape, too.
http://www.paddon.org/mwp/software/ports/xerces-c.tar.gz

* Xalan-c is a C++ library and command line that provides XSLT and Xpath. It 
requires Xerces-c. This port is currently rough, and only installs the 
libraries and command line executables so far. And it only supports shared 
library architectures. But it does seem to work well.
http://www.paddon.org/mwp/software/ports/xalan-c.tar.gz

Comments appreciated.

PS: You may be aware that there are java versions of xerces and xalan as well. 
The advantage of the C++ versions is that they are much faster to start up, 
since there is no JVM is boot.

mwp