Rename author 'T. Bruckner' to 'Thomas Bruckner'

This author contributed to AR3 WGII Ch19,
"Vulnerability to Climate Change and Reasons for Concern: A Synthesis":
http://www.wifa.uni-leipzig.de/en/iirm/energiemanagement/publications.html
https://www.linkedin.com/pub/thomas-bruckner/1b/206/806

This name appears in AR5.