Fix to make the linking of librt more portable.
Fix to make the linking of librt more portable.

BerserkerTroll/root,davidlt/root,agarciamontoro/root,BerserkerTroll/root,pspe/root,mhuwiler/rootauto,lgiommi/root,mhuwiler/rootauto,BerserkerTroll/root,BerserkerTroll/root,zzxuanyuan/root-compressor-dummy,pspe/root,satyarth934/root,zzxuanyuan/root-compressor-dummy,thomaskeck/root,bbockelm/root,buuck/root,zzxuanyuan/root,simonpf/root,lgiommi/root,beniz/root,beniz/root,zzxuanyuan/root,Y--/root,root-mirror/root,bbockelm/root,thomaskeck/root,karies/root,lgiommi/root,buuck/root,karies/root,agarciamontoro/root,georgtroska/root,root-mirror/root,zzxuanyuan/root,abhinavmoudgil95/root,georgtroska/root,agarciamontoro/root,olifre/root,simonpf/root,karies/root,Y--/root,davidlt/root,satyarth934/root,satyarth934/root,veprbl/root,zzxuanyuan/root-compressor-dummy,georgtroska/root,pspe/root,veprbl/root,bbockelm/root,Y--/root,lgiommi/root,beniz/root,lgiommi/root,agarciamontoro/root,beniz/root,olifre/root,thomaskeck/root,georgtroska/root,lgiommi/root,thomaskeck/root,lgiommi/root,pspe/root,bbockelm/root,gganis/root,gbitzes/root,zzxuanyuan/root-compressor-dummy,root-mirror/root,georgtroska/root,buuck/root,root-mirror/root,georgtroska/root,zzxuanyuan/root,thomaskeck/root,agarciamontoro/root,pspe/root,root-mirror/root,olifre/root,buuck/root,satyarth934/root,bbockelm/root,simonpf/root,thomaskeck/root,abhinavmoudgil95/root,davidlt/root,bbockelm/root,georgtroska/root,satyarth934/root,veprbl/root,agarciamontoro/root,BerserkerTroll/root,georgtroska/root,mhuwiler/rootauto,Y--/root,mhuwiler/rootauto,zzxuanyuan/root-compressor-dummy,veprbl/root,karies/root,pspe/root,karies/root,BerserkerTroll/root,beniz/root,abhinavmoudgil95/root,gganis/root,abhinavmoudgil95/root,lgiommi/root,pspe/root,karies/root,davidlt/root,satyarth934/root,BerserkerTroll/root,zzxuanyuan/root,gbitzes/root,davidlt/root,davidlt/root,abhinavmoudgil95/root,davidlt/root,gbitzes/root,buuck/root,mhuwiler/rootauto,zzxuanyuan/root-compressor-dummy,davidlt/root,simonpf/root,thomaskeck/root,Y--/root,zzxuanyuan/root,simonpf/root,simonpf/root,buuck/root,abhinavmoudgil95/root,satyarth934/root,gbitzes/root,gganis/root,beniz/root,veprbl/root,gbitzes/root,gganis/root,pspe/root,thomaskeck/root,buuck/root,Y--/root,gbitzes/root,mhuwiler/rootauto,gganis/root,lgiommi/root,root-mirror/root,Y--/root,satyarth934/root,zzxuanyuan/root,karies/root,karies/root,root-mirror/root,mhuwiler/rootauto,veprbl/root,thomaskeck/root,Y--/root,karies/root,mhuwiler/rootauto,zzxuanyuan/root-compressor-dummy,BerserkerTroll/root,BerserkerTroll/root,simonpf/root,gganis/root,beniz/root,gbitzes/root,olifre/root,karies/root,bbockelm/root,zzxuanyuan/root-compressor-dummy,thomaskeck/root,buuck/root,veprbl/root,olifre/root,zzxuanyuan/root,BerserkerTroll/root,Y--/root,karies/root,root-mirror/root,root-mirror/root,olifre/root,gbitzes/root,agarciamontoro/root,gganis/root,zzxuanyuan/root-compressor-dummy,davidlt/root,BerserkerTroll/root,mhuwiler/rootauto,agarciamontoro/root,gbitzes/root,olifre/root,olifre/root,simonpf/root,gganis/root,georgtroska/root,veprbl/root,veprbl/root,buuck/root,gganis/root,root-mirror/root,agarciamontoro/root,bbockelm/root,abhinavmoudgil95/root,bbockelm/root,zzxuanyuan/root-compressor-dummy,buuck/root,Y--/root,zzxuanyuan/root-compressor-dummy,beniz/root,lgiommi/root,lgiommi/root,buuck/root,pspe/root,beniz/root,root-mirror/root,abhinavmoudgil95/root,davidlt/root,gganis/root,olifre/root,abhinavmoudgil95/root,veprbl/root,olifre/root,gbitzes/root,zzxuanyuan/root,abhinavmoudgil95/root,satyarth934/root,bbockelm/root,satyarth934/root,bbockelm/root,agarciamontoro/root,mhuwiler/rootauto,satyarth934/root,zzxuanyuan/root,zzxuanyuan/root,davidlt/root,beniz/root,beniz/root,Y--/root,simonpf/root,georgtroska/root,simonpf/root,simonpf/root,abhinavmoudgil95/root,mhuwiler/rootauto,pspe/root,georgtroska/root,agarciamontoro/root,olifre/root,zzxuanyuan/root,veprbl/root,pspe/root,gganis/root,gbitzes/root