RFR: 8199736: Define WIN32_LEAN_AND_MEAN before including windows.h

[Robin Westberg]

Hi all,

Please review the following change that defines WIN32_LEAN_AND_MEAN [1] before including windows.h. This marginally improves build times, and makes it possible to include winsock2.h.

Issue: https://bugs.openjdk.java.net/browse/JDK-8199736 <https://bugs.openjdk.java.net/browse/JDK-8199736>
Webrev: http://cr.openjdk.java.net/~rwestberg/8199736/webrev.00/ <http://cr.openjdk.java.net/~rwestberg/8199736/webrev.00/>
Testing: hs-tier1

Best regards,
Robin

[1] https://msdn.microsoft.com/en-us/library/windows/desktop/aa383745%28v=vs.85%29.aspx#faster_builds_with_smaller_header_files <https://msdn.microsoft.com/en-us/library/windows/desktop/aa383745(v=vs.85).aspx#faster_builds_with_smaller_header_files>