develop/ktcc: Post-SVN tidy

- Move source code from `trunk` into program root directory.
- Update build files.

programs/develop/ktcc/lib/libshell/shell_exit.c

@@ -0,0 +1,11 @@
+#include <shell_api.h>
+#include <sys/ksys.h>
+
+void shell_exit()
+{
+    if(__shell_is_init){
+        *__shell_shm = SHELL_EXIT;
+        __SHELL_WAIT();
+        _ksys_shm_close(__shell_shm_name);
+    }
+}