update rtconfig.h for sam7s.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@318 bbd45198-f89e-11dd-88c7-29a3b14d5316

bsp/sam7s/rtconfig.h

@@ -79,15 +79,14 @@
 /* SECTION: FinSH shell options */
 /* Using FinSH as Shell*/
 #define RT_USING_FINSH
+/* use symbol table */
+#define FINSH_USING_SYMTAB
+#define FINSH_USING_DESCRIPTION
 
 /* SECTION: a runtime libc library */
 /* a runtime libc library*/
 /* #define RT_USING_NEWLIB */
 
-/* SECTION: a mini libc */
-/* Using mini libc library*/
-#define RT_USING_MINILIBC
-
 /* SECTION: C++ support */
 /* Using C++ support*/
 /* #define RT_USING_CPLUSPLUS */