fix elm_config_glayer_*_set/get header comment and changelog
fix elm_config_glayer_*_set/get header comment and changelog

Summary: fix elm_config_glayer_*_set/get header comment

Reviewers: seoz, jaehwan, raster

Reviewed By: raster

Differential Revision: https://phab.enlightenment.org/D151

Conflicts:

	ChangeLog

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