Before this change, you had to specify custom LD_* variables using the
prefix GAME_LD_*. Now instead of dropping all LD_* variables by default,
we should just filter them and remove the values we *know* are from our
start script.
Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>
Portable builds now have the same layout as system builds. If you want
to build a portable bundle, you now need to additionally install the
`portable` component.
For example:
$ cmake -Bbuild -DCMAKE_INSTALL_PREFIX=install ...
$ cmake --build build
$ cmake --install build
$ cmake --install build --component portable
