message: Update yaml-cpp to 0.6.1
  There was a quick update to fix an installation bug (which I don't
  believe affected AliPhysics, but it is a minor update that is worth
  having in case it makes a difference). Imported from commit
diff: -libdir=@LIB_INSTALL_DIR@
  -includedir=@INCLUDE_INSTALL_ROOT_DIR@
  +prefix=@CMAKE_INSTALL_PREFIX@
  +exec_prefix=${prefix}
  +includedir=${prefix}/@INCLUDE_INSTALL_ROOT_DIR@
  +libdir=${exec_prefix}/@LIB_INSTALL_DIR@
  Name: Yaml-cpp
  Description: A YAML parser and emitter for C++
  