efl_ui_tab_pager: fixed issue where tab_pager does not work
Summary:
I fixed the tab_pager behavior problem caused by changing efl interface.
and I have also fixed some sample code errors.
- using efl_file_load for efl_file_set
- using efl_del for unpacked tab_page
- disable unimplemented features
Test Plan: elementary_test -to efl.ui.tab_pager
Reviewers: Jaehyun_Cho
Reviewed By: Jaehyun_Cho
Subscribers: cedric, #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D8471