Add a LinkingTo for BH

Author: eddelbuettel

DESCRIPTION

@@ -19,6 +19,7 @@ Description: High level functions for doing parallel programming with 'Rcpp'.
   a standard serial "for" loop into a parallel one and the parallelReduce() 
   function can be used for accumulating aggregate or other values.
 Suggests: Rcpp, RUnit
+LinkingTo: BH
 SystemRequirements: GNU make, Windows: cmd.exe and cscript.exe, Solaris: g++ is required
 License: GPL-2
 URL: http://rcppcore.github.io/RcppParallel, https://github.com/RcppCore/RcppParallel