Keep annotations when computing lubs

Integrates annotationsLub into lub.

Also fixes SubstSymMap when mapping over annotaion trees. I don't
understand what the previous code was supposed to achieve, but it
crashed in some of my examples.

1 files changed, 3 insertions, 0 deletions

diff --git a/test/files/pos/lubs.scala b/test/files/pos/lubs.scala
new file mode 100644
index 0000000000..d7651f86b0
--- /dev/null
+++ b/test/files/pos/lubs.scala
@@ -0,0 +1,3 @@
+object Test {
+  List(new { def f = 1; def g = 1}, new { def f = 2}).map(_.f)
+}