- disabled warning 4786 for VS6 caused by STL (identifier was truncated to '255' characters in the debug information)
- added batchbuild config for XP VM


git-svn-id: https://svn.code.sf.net/p/jsoncpp/code/trunk/jsoncpp@267 1f120ed1-78a5-a849-adca-83f0a9e25bb6