By Andres Gonzalez LONDON (Reuters) – Wind turbine maker Siemens Gamesa has appointed its Asia Pacific boss Richard Luijendijk as chief executive of its onshore unit as it seeks to turn around the business, a memo signed by Siemens Gamesa CEO Jochen Eickholt showed. Luijendijk will replace Lars Bondo Krogsgaard, whose departure was announced in October, with the company saying in an email to staff it needed a “change due to the losses in the onshore business and the continuous underperformance.” A Siemens Gamesa spokesperson declined to comment. The company posted a net loss of 940 million eur…