Merge pull request pymssql#397 from pymssql/report-tds-version-7.3

_mssql.pyx: report TDS version 7.3 in connection.tds_version property.

Author: ramiro

ChangeLog

@@ -8,6 +8,8 @@ General
 -------
 
 - Drop support for versions of FreeTDS older than 0.91.
+- Add support for reporting TDS version 7.3 is i use via the ``tds_version``
+  property of a ``_mssql``-level connection.
 
 Features
 --------

src/_mssql.pyx

@@ -508,7 +508,9 @@ cdef class MSSQLConnection:
         """
         def __get__(self):
             cdef int version = dbtds(self.dbproc)
-            if version == 10:
+            if version == 11:
+                return 7.3
+            elif version == 10:
                 return 7.2
             elif version == 9:
                 return 7.1