Added overloaded ByExampleWhere<T>() method

Added overloaded ByExampleWhere<T>(this IDbConnection dbConn, object
anonType, bool excludeNulls) because OrmLiteQueryTests that used
ByExample were failing.

Passing the excludeNulls all the way allows for the correct sql
statement to be generated.
In this case not having the where clause with null value properties
which is what the test expects anyway.

Author: madaleno

src/ServiceStack.OrmLite/OrmLiteReadConnectionExtensions.cs

@@ -200,6 +200,11 @@ public static List<T> ByExampleWhere<T>(this IDbConnection dbConn, object anonTy
             return dbConn.Exec(dbCmd => dbCmd.ByExampleWhere<T>(anonType));
         }
 
+        public static List<T> ByExampleWhere<T>(this IDbConnection dbConn, object anonType, bool excludeNulls)
+        {
+            return dbConn.Exec(dbCmd => dbCmd.ByExampleWhere<T>(anonType, excludeNulls));
+        }
+
         public static List<T> QueryByExample<T>(this IDbConnection dbConn, string sql, object anonType = null)
         {
             return dbConn.Exec(dbCmd => dbCmd.QueryByExample<T>(sql, anonType));

src/ServiceStack.OrmLite/OrmLiteReadExtensions.cs

@@ -452,9 +452,14 @@ internal static T SqlScalar<T>(this IDbCommand dbCmd, string sql, Dictionary<str
                 return GetScalar<T>(dbReader);
         }
 
-	    internal static List<T> ByExampleWhere<T>(this IDbCommand dbCmd, object anonType)
+        internal static List<T> ByExampleWhere<T>(this IDbCommand dbCmd, object anonType)
+        {
+            return ByExampleWhere<T>(dbCmd, anonType, false);
+        }
+
+        internal static List<T> ByExampleWhere<T>(this IDbCommand dbCmd, object anonType, bool excludeNulls)
 		{
-            dbCmd.SetFilters<T>(anonType, excludeNulls: false);
+            dbCmd.SetFilters<T>(anonType, excludeNulls);
 
 			using (var dbReader = dbCmd.ExecuteReader())
 				return dbReader.ConvertToList<T>();