git: openjdk/loom: fibers: 2 new changesets

[duke]

Changeset: 26ed19a0
Author:    Alan Bateman <alan.bateman at oracle.com>
Date:      2020-08-13 08:01:20 +0000
URL:       https://git.openjdk.java.net/loom/commit/26ed19a0

Fix blockingWriteFully

! src/java.base/share/classes/sun/nio/ch/SocketChannelImpl.java

Changeset: c2a409a9
Author:    Alan Bateman <alan.bateman at oracle.com>
Date:      2020-08-13 09:28:44 +0000
URL:       https://git.openjdk.java.net/loom/commit/c2a409a9

Fix build issue

! test/hotspot/jtreg/serviceability/jvmti/vthread/NullAsCurrentThreadTest/libNullAsCurrentThreadTest.cpp