Prepare wpiutil for merge into allwpilib.

wpiutil/src/main/native/include/support/hostname.h

@@ -0,0 +1,25 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2017-2018 FIRST. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#ifndef WPIUTIL_SUPPORT_HOSTNAME_H_
+#define WPIUTIL_SUPPORT_HOSTNAME_H_
+
+#include <string>
+
+#include "llvm/StringRef.h"
+
+namespace llvm {
+template <typename T>
+class SmallVectorImpl;
+}  // namespace llvm
+
+namespace wpi {
+std::string GetHostname();
+llvm::StringRef GetHostname(llvm::SmallVectorImpl<char>& name);
+}  // namespace wpi
+
+#endif  // WPIUTIL_SUPPORT_HOSTNAME_H_