mikutter: update to 3.9.0-alpha1.

pkgsrc changes:
- remove patch for totoridipjp (removed in upstream too)
- remove patch for upstream ticket #1323 (integrated in 3.9)

Upstream changes (from "new features of mikutter 3.9"):

* Mastodon plugin
* Support for UI scaling
* World account can be assigned to shortcut key
* Reorder World accounts
* Non-PNG image support for Skin
* Generic Model viewer
* Quick Step
* PulseAudio
* Reorgenize gem dependencies

(tsutsui)