link against rt for clock_gettime on Ubuntu 12.04
link against rt for clock_gettime on Ubuntu 12.04

TyRoXx/cdm,TyRoXx/cdm,TyRoXx/cdm,TyRoXx/cdm,TyRoXx/cdm,TyRoXx/cdm,TyRoXx/cdm,TyRoXx/cdm,TyRoXx/cdm,TyRoXx/cdm,TyRoXx/cdm