This patches add compatibility for the forthcoming RobotFramework 5.

Taken from: https://github.com/robotframework/SSHLibrary/pull/403.
diff --git a/src/SSHLibrary/pythonforward.py b/src/SSHLibrary/pythonforward.py
index 8b85997b7..607985cf4 100644
--- a/src/SSHLibrary/pythonforward.py
+++ b/src/SSHLibrary/pythonforward.py
@@ -1,9 +1,9 @@
 import select
 import socket
 import threading
-from robot.utils import platform
+from robot.utils import PY2, WINDOWS
 from .logger import logger
-if platform.PY2 and platform.WINDOWS:
+if PY2 and WINDOWS:
     import win_inet_pton
 try:
     import SocketServer
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<div class='path'>path: <a href='/guix/log/?id=bd1b1e0517b046a6ad6d48633d43c644edea7424'>root</a>/<a href='/guix/log/gnu?id=bd1b1e0517b046a6ad6d48633d43c644edea7424'>gnu</a>/<a href='/guix/log/gnu/packages?id=bd1b1e0517b046a6ad6d48633d43c644edea7424'>packages</a>/<a href='/guix/log/gnu/packages/patches?id=bd1b1e0517b046a6ad6d48633d43c644edea7424'>patches</a>/<a href='/guix/log/gnu/packages/patches/findutils-test-xargs.patch?id=bd1b1e0517b046a6ad6d48633d43c644edea7424'>findutils-test-xargs.patch</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/patches/findutils-test-xargs.patch?id=bd1b1e0517b046a6ad6d48633d43c644edea7424&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2016-01-01 01:05:06 +0100'>2016-01-01</span></td><td><a href='/guix/commit/gnu/packages/patches/findutils-test-xargs.patch?id=e80d2555f5dfa89cd44b261ead2c5fd397a51f56'>gnu: findutils: Update to 4.6.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/patches/findutils-absolute-paths.patch: Remove.
* gnu/packages/patches/findutils-test-xargs.patch: New file.
* gnu-system.am (dist_patch_DATA): Adjust accordingly.
* gnu/packages/base.scm (findutils): Update to 4.6.0.  Remove
'findutils-absolute-paths.patch' and add 'findutils-test-xargs.patch'.
</span></span></td><td>Ludovic Courtès</td></tr>