fixed issue 1390, dateTtime separator in MSSQL, thanks score2000

VERSION

@@ -1 +1 @@
-Version 2.4.4-stable+timestamp.2013.03.15.10.00.02
+Version 2.4.4-stable+timestamp.2013.03.15.10.05.12

gluon/dal.py

@@ -633,6 +633,7 @@ class BaseAdapter(ConnectionPool):
 
     TRUE = 'T'
     FALSE = 'F'
+    T_SEP = ' '
     types = {
         'boolean': 'CHAR(1)',
         'string': 'CHAR(%(length)s)',
@@ -1810,7 +1811,7 @@ class BaseAdapter(ConnectionPool):
                 obj = str(obj)
         elif fieldtype == 'datetime':
             if isinstance(obj, datetime.datetime):
-                obj = obj.isoformat()[:19].replace('T',' ')
+                obj = obj.isoformat(self.T_SEP)[:19]
             elif isinstance(obj, datetime.date):
                 obj = obj.isoformat()[:10]+' 00:00:00'
             else:
@@ -3033,6 +3034,7 @@ class OracleAdapter(BaseAdapter):
 
 class MSSQLAdapter(BaseAdapter):
     drivers = ('pyodbc',)
+    T_SEP = 'T'
 
     types = {
         'boolean': 'BIT',