update macro DFS_FILESYSTEMS_MAX to 4

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1144 bbd45198-f89e-11dd-88c7-29a3b14d5316

bsp/mini2440/rtconfig.h

@@ -3,7 +3,7 @@
 #define __RTTHREAD_CFG_H__
 
 /* RT_NAME_MAX*/
-#define RT_NAME_MAX	8
+#define RT_NAME_MAX	32
 
 /* RT_ALIGN_SIZE*/
 #define RT_ALIGN_SIZE	4
@@ -65,6 +65,7 @@
 
 /* Using Module System */
 #define RT_USING_MODULE
+#define RT_USING_LIBDL
 
 /* SECTION: Console options */
 /* the buffer size of console */
@@ -102,7 +103,7 @@
 /* #define DFS_USING_WORKDIR */
 
 /* the max number of mounted filesystem */
-#define DFS_FILESYSTEMS_MAX		2
+#define DFS_FILESYSTEMS_MAX		4
 /* the max number of opened files 		*/
 #define DFS_FD_MAX					16
 /* the max number of cached sector 		*/