border remembers: rename Using to Identifiers to be more obvious
border remembers: rename Using to Identifiers to be more obvious

Signed-off-by: Thomas Gstädtner <thomas@gstaedtner.net>

SVN revision: 79223

tasn/enlightenment,tasn/enlightenment,tizenorg/platform.upstream.enlightenment,rvandegrift/e,rvandegrift/e,tasn/enlightenment,tizenorg/platform.upstream.enlightenment,FlorentRevest/Enlightenment,FlorentRevest/Enlightenment,tizenorg/platform.upstream.enlightenment,FlorentRevest/Enlightenment,rvandegrift/e