tsearch2 documentation additions

Hi there,

there are several new contributed docs on tsearch2 page:

# How to use tsearch2 in Japanese
# Tsearch2 and Unicode/UTF-8
# Howto write my own parser for tsearch2

Thanks to Junji TERAMOTO, Markus Wollny and Valli for their work !

Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83