Log Message:
mikutter: update to 3.6.7.

pkgsrc changes:
- use https for MASTER_SITES and HOMEPAGE
- depends on a patched ruby-gnome2-gtk

Upstream changes:

mikutter 3.6.7

* explicitly use stable gtk2 gem 3.2.1 due to regressions of newer version
* twitter: updates of timeline by REST API didn't work
* modify_world didn't work
 * thanks Akira Ouchi