SQLServer upgrade script bpms-6.0-to-6.1.sql for SqlServer2008 dialect contains commands for SqlServer dialect.

Upgrade script bpms-6.0-to-6.1.sql for SQLServer2008 dialect contains at the beginning create table AuditTaskImpl statement, that is copied from script for SQLServer dialect. E.g. there is defined id column as numeric(19,0), but in community script jbpm-6.0-to-6.1.sql the column type is bigint. Will make a PR for this.