ZSTD-4187 [regression] Installation of extra features damages Studio.

Signed-off-by: Natalia Bartol <natalia.b@zend.com>
Merge branch 'R3.8.2-patches' of
git@github.com:zendtech/rt.equinox.p2.git into R3.8.2-patches

Conflicts:
	bundles/org.eclipse.equinox.p2.director/src/org/eclipse/equinox/internal/p2/director/SimplePlanner.java

Signed-off-by: Natalia Bartol <natalia.b@zend.com>