#1 Add support for MSSQL batch terminator

[ardas.dp.ua]

Currently DBMaintain does not allow to update MSSQL database with script which has statements separated with "GO" batch terminator.
Our patch adds such support. At least it worked correctly with our DB creation scripts.
This is patch against DBMaintain version 2.4 (https://dbmaintain.svn.sourceforge.net/svnroot/dbmaintain/tags/releases/dbmaintain-parent-2.4)

[ardas.dp.ua]