etc/profile.d: simplify PATH/LD_LIBRARY_PATH export

.. and move export LD_LIBRARY_PATH to busybox (where ot belongs)
update TODO
ncurses: convert to new package format

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Merge branch 'master' of github.com:OpenELEC/OpenELEC.tv