Bump buildroot to version 2017-02

TG-3 #closed

bsp/buildroot/docs/manual/contribute.txt

@@ -258,6 +258,12 @@ removed, preferably with the upstream commit ID. Also any other
 required changes should be explained explicitly, like configure
 options that no longer exist or are no longer needed.
 
+If you are interested in getting notified of build failures and of
+further changes in the packages you added or modified, please add
+yourself to the DEVELOPERS file. This should be done in a separate
+patch of the series. See xref:DEVELOPERS[the DEVELOPERS file] for more
+information.
+
 ==== Preparing a patch series
 
 Starting from the changes committed in your local git view, _rebase_
@@ -283,10 +289,19 @@ automatically adding the +Signed-off-by+ line.
 Once patch files are generated, you can review/edit the commit message
 before submitting them, using your favorite text editor.
 
-Lastly, send/submit your patch set to the Buildroot mailing list:
+Buildroot provides a handy tool to know to whom your patches should be
+sent, called +get-developers+ (see xref:DEVELOPERS[] for more
+information). This tool reads your patches and outputs the appropriate
++git send-email+ command to use:
 
 ---------------------
-$ git send-email --to buildroot@buildroot.org outgoing/*
+$ ./support/scripts/get-developers outgoing/*
+---------------------
+
+Use the output of +get-developers+ to send your patches:
+
+---------------------
+$ git send-email --to buildroot@buildroot.org --cc bob --cc alice outgoing/*
 ---------------------
 
 Note that +git+ should be configured to use your mail account.