[xml] about xmlThrDefDefaultBufferSize

["中井和広" <nakai kazuhiro sharp co jp>]

Hello .

I want to know usage of xmlThrDefDefaultBufferSize.
Im producing some controler using libxml2, and make it small as 
possible as I can.
Libxml2 uses match memory when parse the control target file, written 
by xml. 
The xml file size about 50Kbytes, but the system uses over 10 MByte 
when read it.
Thats why I try to change default buffer size of xml library. And I 
found related functions as ....
1. xmlCleanupParser() 
2. xmlThrDefDefaultBufferSize
and
3. xmlThrDefBufferAllocScheme

I tried these functions on my software but any effect appears.
Would anyone teach me how to use these function ?

thank you.