elementary: Handle case where ELM_ENGINE environment variable is misspelled.
elementary: Handle case where ELM_ENGINE environment variable is
misspelled.

In case someone exports the ELM_ENGINE to be wayland-shm or
wayland-egl, let's handle That case also. Typically it is set to
wayland_shm or wayland_egl but since we check variants of spelling for
other engines also, then let's check it for the wayland engines too.

@fix

Signed-off-by: Chris Michael <177aeddb9e34930a357ecd8dd2d21c80fe280c85@samsung.com>

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