Change RefID field size from 16 to 20 with updated algo

Xid dependency updated.

Moved to 20 length ID values.

Added new revision number to version and meta information. Revision number is timestamp format.

core/uniqueid/xid/hostid_windows.go

@@ -0,0 +1,38 @@
+// +build windows
+
+package xid
+
+import (
+	"fmt"
+	"syscall"
+	"unsafe"
+)
+
+func readPlatformMachineID() (string, error) {
+	// source: https://github.com/shirou/gopsutil/blob/master/host/host_syscall.go
+	var h syscall.Handle
+	err := syscall.RegOpenKeyEx(syscall.HKEY_LOCAL_MACHINE, syscall.StringToUTF16Ptr(`SOFTWARE\Microsoft\Cryptography`), 0, syscall.KEY_READ|syscall.KEY_WOW64_64KEY, &h)
+	if err != nil {
+		return "", err
+	}
+	defer syscall.RegCloseKey(h)
+
+	const syscallRegBufLen = 74 // len(`{`) + len(`abcdefgh-1234-456789012-123345456671` * 2) + len(`}`) // 2 == bytes/UTF16
+	const uuidLen = 36
+
+	var regBuf [syscallRegBufLen]uint16
+	bufLen := uint32(syscallRegBufLen)
+	var valType uint32
+	err = syscall.RegQueryValueEx(h, syscall.StringToUTF16Ptr(`MachineGuid`), nil, &valType, (*byte)(unsafe.Pointer(&regBuf[0])), &bufLen)
+	if err != nil {
+		return "", err
+	}
+
+	hostID := syscall.UTF16ToString(regBuf[:])
+	hostIDLen := len(hostID)
+	if hostIDLen != uuidLen {
+		return "", fmt.Errorf("HostID incorrect: %q\n", hostID)
+	}
+
+	return hostID, nil
+}