Include test for specific C++14 features in ax_cxx_compile_stdcxx_14.m4

8 jobs for master
Status Name Job ID Coverage
  Test
passed job_clang_amd64 #450
amd64

02:56:26

passed job_clang_amd64_nosh #454
amd64

02:55:19

passed job_clang_py2_amd64 #452
amd64

02:54:07

passed job_gcc_386 #447
i386

03:07:28

passed job_gcc_amd64 #449
amd64

02:18:38

passed job_gcc_amd64_nosh #453
amd64

02:16:21

passed job_gcc_py2_386 #448
i386

03:07:11

passed job_gcc_py2_amd64 #451
amd64

02:18:47