Add variadic macro for BENCHMARK_TEMPLATE in c++11 and beyond.
Add variadic macro for BENCHMARK_TEMPLATE in c++11 and beyond.

disconnect3d/benchmark,efcs/benchmark,bowlofstew/benchmark,Photonomie/benchmark,xlqian/benchmark,ntx-/benchmark,efcs/benchmark,Photonomie/benchmark,mockingbirdnest/benchmark,mockingbirdnest/benchmark,Photonomie/benchmark,nickhutchinson/benchmark-cxx03,bowlofstew/benchmark,subailong/benchmark,fuchsia-mirror/third_party-benchmark,LepelTsmok/benchmark,google/benchmark,chandlerc/benchmark,ntx-/benchmark,google/benchmark,gezidan/benchmark,everbase/benchmark,fuchsia-mirror/third_party-benchmark,everbase/benchmark,nickhutchinson/benchmark-cxx03,disconnect3d/benchmark,gezidan/benchmark,quantumsteve/benchmark,chemhack/benchmark,chemhack/benchmark,disconnect3d/benchmark,xlqian/benchmark,bowlofstew/benchmark,nickhutchinson/benchmark-cxx03,LepelTsmok/benchmark,fuchsia-mirror/third_party-benchmark,xlqian/benchmark,codygray/benchmark,chandlerc/benchmark,quantumsteve/benchmark,bowlofstew/benchmark,mockingbirdnest/benchmark,eliben/benchmark,subailong/benchmark,eliben/benchmark,codygray/benchmark,quantumsteve/benchmark,codygray/benchmark,chandlerc/benchmark,Photonomie/benchmark,eliben/benchmark,mockingbirdnest/benchmark,google/benchmark,nickhutchinson/benchmark,subailong/benchmark,everbase/benchmark,ntx-/benchmark,LepelTsmok/benchmark,codygray/benchmark,xlqian/benchmark,efcs/benchmark,LepelTsmok/benchmark,fuchsia-mirror/third_party-benchmark,chemhack/benchmark,subailong/benchmark,everbase/benchmark,nickhutchinson/benchmark,nickhutchinson/benchmark,efcs/benchmark,quantumsteve/benchmark,nickhutchinson/benchmark,gezidan/benchmark,nickhutchinson/benchmark-cxx03,ntx-/benchmark,disconnect3d/benchmark,chandlerc/benchmark,eliben/benchmark,chemhack/benchmark,gezidan/benchmark