CONFIG: Adding AC_LANG_SOURCE wrapper
CONFIG: Adding AC_LANG_SOURCE wrapper

Addressing the issue reported by Tony #86

shssf/ucx,shssf/ucx,biddisco/ucx,manjugv/ucx,manjugv/ucx,abouteiller/ucx,sergsagal1/ucx_rocm,miked-mellanox/ucx,sergsagal1/ucx_rocm,biddisco/ucx,sergsagal1/ucx_rocm,abouteiller/ucx,shssf/ucx,miked-mellanox/ucx,miked-mellanox/ucx,abouteiller/ucx,manjugv/ucx,abouteiller/ucx,biddisco/ucx