Update ebuild dev-tcltk/tclreadline-2.1.0-r3

* Fix runtime crash after entering a command
* Fix behaviour when expanding history
* Make prompt match that of tclsh

Package-Manager: portage-2.2.7
Update ebuild dev-tcltk/tclreadline-2.1.0-r3

Merge changes to ebuild from Portage tree

Package-Manager: portage-2.2.7
Update ebuild dev-tcltk/tclreadline-2.1.0-r3

* Fix memory allocation issue with tab-completion
* Fix call to internal readline function completion_matches instead of API function rl_completion_matches

Package-Manager: portage-2.2.7