hg: build-infra/jdk9/langtools: 2 new changesets

[magnus.ihse.bursie at oracle.com]

Changeset: 6e680ff5969e
Author:    lana
Date:      2015-10-05 20:25 -0700
URL:       http://hg.openjdk.java.net/build-infra/jdk9/langtools/rev/6e680ff5969e

Added tag jdk9-b84 for changeset e3445ccab58f

! .hgtags

Changeset: 36e9f8f42a8c
Author:    ihse
Date:      2015-10-06 12:03 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk9/langtools/rev/36e9f8f42a8c

Merge