SI-9321 Clarify spec for inheritance of qualified private

I checked the intent with Martin, who said:

> [...] qualified private members are inherited like other members,
> it’s just that their access is restricted.

I've locked this in with a test as well.

1 files changed, 10 insertions, 0 deletions

diff --git a/test/files/pos/t9321.scala b/test/files/pos/t9321.scala
new file mode 100644
index 0000000000..ed3a816656
--- /dev/null
+++ b/test/files/pos/t9321.scala
@@ -0,0 +1,10 @@
+object p {
+  trait A {
+    private[p] val qualifiedPrivateMember = 1
+  }
+ 
+  def useQualifiedPrivate(b: Mix) =
+    b.qualifiedPrivateMember // allowed
+}
+ 
+trait Mix extends p.A