添加 setReentrantBufferSize(int)，setWriterBufferSize 更名为 setBufferSize

src/main/java/com/jfinal/template/Engine.java

@@ -566,8 +566,13 @@ public class Engine {
 		return this;
 	}
 	
-	public Engine setWriterBufferSize(int bufferSize) {
-		config.setWriterBufferSize(bufferSize);
+	public Engine setBufferSize(int bufferSize) {
+		config.setBufferSize(bufferSize);
+		return this;
+	}
+	
+	public Engine setReentrantBufferSize(int reentrantBufferSize) {
+		config.setReentrantBufferSize(reentrantBufferSize);
 		return this;
 	}
 	

src/main/java/com/jfinal/template/EngineConfig.java

@@ -314,10 +314,14 @@ public class EngineConfig {
 		writerBuffer.setEncoding(encoding);		// 间接设置 EncoderFactory.encoding
 	}
 	
-	public void setWriterBufferSize(int bufferSize) {
+	public void setBufferSize(int bufferSize) {
 		writerBuffer.setBufferSize(bufferSize);
 	}
 	
+	public void setReentrantBufferSize(int reentrantBufferSize) {
+		writerBuffer.setReentrantBufferSize(reentrantBufferSize);
+	}
+	
 	/**
 	 * 配置自己的 WriterBuffer 实现，配置方法：
 	 * engine.getEngineConfig().setWriterBuffer(...);