[patch] fix for regression tests (locale cs_CZ)

I attached fix for regression tests and Czech locale. It is not complete
yet, because I fighting with foreign_data test. But it fix three other
tests.

The difference is that Czech collation sorts numbers after letters.


    thanks Zdenek

See:
http://www.pgbuildfarm.org/cgi-bin/show_log.pl?nm=gothic_moth&dt=2009-02-02%2017:30:13