[Buildroot] [git commit master 1/1] readline: bump to version 6.1

[Peter Korsgaard]

commit: http://git.buildroot.net/buildroot/commit/?id=268ab3c94111e35264556b32df8e6f5c913291b0
branch: http://git.buildroot.net/buildroot/commit/?id=refs/heads/master

Signed-off-by: Gustavo Zacarias <gustavo at zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet at sunsite.dk>

Patch is too large, so refusing to show it