Add Merging Reduce interface to TProcessExecutor
Add Merging Reduce interface to TProcessExecutor

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