NH-3807 - Replace use of System.Collections.Queue with System.Collections.Generic.Queue<>.

System.Collections.Queue has been removed from CoreClr.

Author: ngbrown

src/NHibernate/Cfg/MappingsQueue.cs

@@ -1,4 +1,3 @@
-using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -10,7 +9,7 @@ namespace NHibernate.Cfg
 	/// </summary>
 	public class MappingsQueue
 	{
-		private readonly Queue availableEntries = new Queue();
+		private readonly Queue<MappingsQueueEntry> availableEntries = new Queue<MappingsQueueEntry>();
 		private readonly ISet<string> processedClassNames = new HashSet<string>();
 
 		private readonly List<MappingsQueueEntry> unavailableEntries = new List<MappingsQueueEntry>();
@@ -109,4 +108,4 @@ private static string FormatExceptionMessage(IEnumerable<MappingsQueueEntry> res
 			return message.ToString();
 		}
 	}
-}
+}

src/NHibernate/Dialect/BitwiseFunctionOperation.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections;
+using System.Collections.Generic;
 using NHibernate.Dialect.Function;
 using NHibernate.Engine;
 using NHibernate.SqlCommand;
@@ -15,7 +16,7 @@ public class BitwiseFunctionOperation : ISQLFunction
 	{
 		private readonly string _functionName;
 		private SqlStringBuilder _sqlBuffer;
-		private Queue _args;
+		private Queue<object> _args;
 
 		/// <summary>
 		/// Creates an instance of this class using the provided function name
@@ -62,7 +63,7 @@ public SqlString Render(IList args, ISessionFactoryImplementor factory)
 		private void Prepare(IList args)
 		{
 			_sqlBuffer = new SqlStringBuilder();
-			_args = new Queue();
+			_args = new Queue<object>();
 			foreach (var arg in args)
 			{
 				if (!IsParens(arg.ToString()))

src/NHibernate/Dialect/BitwiseNativeOperation.cs

@@ -1,5 +1,7 @@
 using System;
 using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
 using NHibernate.Dialect.Function;
 using NHibernate.Engine;
 using NHibernate.SqlCommand;
@@ -15,7 +17,7 @@ public class BitwiseNativeOperation : ISQLFunction
 	{
 		private readonly string _sqlOpToken;
 		private readonly bool _isNot;
-        private Queue _args;
+        private Queue<object> _args;
 		private SqlStringBuilder _sqlBuffer;
 
 		/// <summary>
@@ -76,7 +78,7 @@ public SqlString Render(IList args, ISessionFactoryImplementor factory)
 		private void Prepare(IList args)
 		{
 			_sqlBuffer = new SqlStringBuilder();
-			_args = new Queue(args);
+			_args = new Queue<object>(args.Cast<object>());
 		}
 
 		private void AddFirstArgument()