[do_sqlserver] Use nvarchar(max) not text in specs
[do_sqlserver] Use nvarchar(max) not text in specs

* text data type deprecated: see http://msdn.microsoft.com/en-us/library/ms187993(SQL.90).aspx

Signed-off-by: Alex Coles <60c6d277a8bd81de7fdde19201bf9c58a3df08f4@alexcolesportfolio.com>

simonkro/do_mysql,simonkro/do_mysql,simonkro/do_mysql