Update runtime files.
Includes changing &sw to shiftwidth() for all indent scripts.
diff --git a/runtime/doc/channel.txt b/runtime/doc/channel.txt
index 3078d31..39cd912 100644
--- a/runtime/doc/channel.txt
+++ b/runtime/doc/channel.txt
@@ -1,4 +1,4 @@
-*channel.txt* For Vim version 8.0. Last change: 2016 Dec 02
+*channel.txt* For Vim version 8.0. Last change: 2017 Jun 11
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -489,6 +489,11 @@
"callback" option: >
let job = job_start(command, {"callback": "MyHandler"})
+Depending on the system, starting a job can put Vim in the background, the
+started job gets the focus. To avoid that, use the `foreground()` function.
+This might not always work when called early, put in the callback handler or
+use a timer to call it after the job has started.
+
You can send a message to the command with ch_evalraw(). If the channel is in
JSON or JS mode you can use ch_evalexpr().