interface scroll: handle wanted x coordinates in case of mirroring.
interface scroll: handle wanted x coordinates in case of mirroring.

Summary:
In case of mirror enabled, wanted x should come from _elm_scroll_x_mirrored_get().
This defect is visible in case of some fancy effects on scroller (map).

@Fix

Reviewers: raster, Hermet

Subscribers: herdsman, sachin.dev, kimcinoo, eagleeye, seoz

Differential Revision: https://phab.enlightenment.org/D2363

tasn/elementary,FlorentRevest/Elementary,rvandegrift/elementary,FlorentRevest/Elementary,rvandegrift/elementary,tasn/elementary,FlorentRevest/Elementary,tasn/elementary,tasn/elementary,rvandegrift/elementary,rvandegrift/elementary,tasn/elementary,FlorentRevest/Elementary