Update upstream libraries

diff --git a/src/github.com/dustin/go-humanize b/src/github.com/dustin/go-humanize
index ef638b6c2e62b857442c6443dace9366a48c0ee2..259d2a102b871d17f30e3cd9881a642961a1e486 160000 (submodule)
--- a/src/github.com/dustin/go-humanize
+++ b/src/github.com/dustin/go-humanize
@@ -1 +1 @@
-Subproject commit ef638b6c2e62b857442c6443dace9366a48c0ee2
+Subproject commit 259d2a102b871d17f30e3cd9881a642961a1e486

diff --git a/src/golang.org/x/crypto b/src/golang.org/x/crypto
index 3cb07270c9455e8ad27956a70891c962d121a228..c7af5bf2638a1164f2eb5467c39c6cffbd13a02e 160000 (submodule)
--- a/src/golang.org/x/crypto
+++ b/src/golang.org/x/crypto
@@ -1 +1 @@
-Subproject commit 3cb07270c9455e8ad27956a70891c962d121a228
+Subproject commit c7af5bf2638a1164f2eb5467c39c6cffbd13a02e

diff --git a/src/golang.org/x/net b/src/golang.org/x/net
index ffcf1bedda3b04ebb15a168a59800a73d6dc0f4d..da118f7b8e5954f39d0d2130ab35d4bf0e3cb344 160000 (submodule)
--- a/src/golang.org/x/net
+++ b/src/golang.org/x/net
@@ -1 +1 @@
-Subproject commit ffcf1bedda3b04ebb15a168a59800a73d6dc0f4d
+Subproject commit da118f7b8e5954f39d0d2130ab35d4bf0e3cb344

diff --git a/src/golang.org/x/sys b/src/golang.org/x/sys
index 9a7256cb28ed514b4e1e5f68959914c4c28a92e0..9ccfe848b9db8435a24c424abbc07a921adf1df5 160000 (submodule)
--- a/src/golang.org/x/sys
+++ b/src/golang.org/x/sys
@@ -1 +1 @@
-Subproject commit 9a7256cb28ed514b4e1e5f68959914c4c28a92e0
+Subproject commit 9ccfe848b9db8435a24c424abbc07a921adf1df5