Add HqlTreeBuilder.From overload which accepts HqlRange and a collection of HqlJoin

Fixes #1838

Author: hazzik

src/NHibernate/Hql/Ast/HqlTreeBuilder.cs

@@ -74,6 +74,22 @@ public HqlSelectFrom SelectFrom(HqlFrom @from)
 			return new HqlSelectFrom(_factory, @from);
 		}
 
+		public HqlFrom From(HqlRange range, params HqlJoin[] joins)
+		{
+			var hqlFrom = new HqlFrom(_factory, range);
+			foreach (var join in joins)
+				hqlFrom.AddChild(join);
+			return hqlFrom;
+		}
+
+		public HqlFrom From(HqlRange range, IEnumerable<HqlJoin>  joins)
+		{
+			var hqlFrom = new HqlFrom(_factory, range);
+			foreach (var join in joins)
+				hqlFrom.AddChild(join);
+			return hqlFrom;
+		}
+
 		public HqlFrom From(HqlRange range)
 		{
 			return new HqlFrom(_factory, range);