SPRNET-1444 update documentation to reflect new default transaction isolation level Unspecified

BreakingChanges.txt

@@ -1,8 +1,12 @@
 Changes (1.3.2 to 2.0)
 ========================
 
-Protected fields were changed to private. Access is now allowed via public/protected property member.
-Members marked as Obsolete before 2.0 release were removed.
+1. Default transaction isolation level is now IsolationLevel.Unspecified instead of old IsolationLevel.ReadUncommitted
+ - You need to update your configuration to set the isolation level where old ReadUncommitted was expected, see Spring documentation's Transaction Management chapter
+ 
+2. Protected fields were changed to private. Access is now allowed via public/protected property member.
+
+3. Most of members marked as Obsolete before 2.0 release were removed.
 
 
 Changes (1.3.1 to 1.3.2)

doc/reference/src/classic-spring.xml

@@ -412,7 +412,7 @@
       Spring.Transaction.TransactionPropagation enumeration, namely Required,
       Supports, Mandatory, RequiresNew, NotSupported, Never, Nested. The
       string used for ISOLATION_NAME are those defined on the
-      System.Data.IsolationLevel enumberateion, namely ReadCommitted,
+      System.Data.IsolationLevel enumeration, namely ReadCommitted,
       ReadUncommitted, RepeatableRead, Serializable.</para>
 
       <para>The TransactionProxyFactoryObject allows you to set optional "pre"

doc/reference/src/transaction.xml

@@ -1068,7 +1068,7 @@ mgr.DeleteTwoTestObjects("Jack", "Jill");
 
                 <entry>No</entry>
 
-                <entry>ReadCommitted</entry>
+                <entry>Unspecified</entry>
 
                 <entry>The transaction isolation level</entry>
               </row>
@@ -1162,7 +1162,7 @@ mgr.DeleteTwoTestObjects("Jack", "Jill");
 
         <listitem>
           <para>The isolation level is
-          <literal>IsolationLevel.ReadCommitted</literal></para>
+          <literal>IsolationLevel.Unspecified</literal></para>
         </listitem>
 
         <listitem>