[xslt] exslt strings bug

[Alex Sergeyev <abc executive-solutions com>]

Hello,

I found, that exslt-strings-split and exslt-strings-tokenize don't work correctly with the entities in argument.... Just few examples based on libxslt-1.0.33/tests/exslt/strings files

tokenize.2.xsl
	You can try these:
	str:tokenize('This is & strange behavior', ' ')
        str:tokenize('This is & strange; behavior', ' ')
	str:tokenize('This is &strange; behavior', ' ')

split.1.xsl
	just one to be sure:
	str:split('data &math str;') doesn't work correctly


That's it.

Alex.