temporary fix for link errors in certain build configurations.
temporary fix for link errors in certain build configurations.

michael hertling [provided][1] me with some help regarding link errors i had in my integration of trio through ExternalProject.cmake.

[1]: http://www.cmake.org/pipermail/cmake/2011-October/046672.html

fmrl/ramalloc,fmrl/ramalloc,fmrl/ramalloc,fmrl/ramalloc