Update to buildroot toolchain for nios2

You may write your question in chinese here.

A. the patch is incorrect between first and second file.

Just apply the orginal patch without the modification.

There will be only one fail in the first part. then edit the file buildroot/toolchain/Config.in with an editor on Linux. add the line for elf2flt at about line 13.

source "toolchain/elf2flt/Config.in"

B. You need to install Ncurese libraries to your Linux for buildroot.

If you use slackware, it is in "L" set.

File: ncurses-5.3-i386-1.tgz for slackware 9.0

installpkg ncurses-5.3-i386-1.tgz

If you use redhat/fedora core

File: ncurses-5.4-17.i386.rpm for fc4

rpm -ivh ncurses-5.4-17.i386.rpm

or yum ncurses