cmake HAVE_VARARGS_H examples

arkdb/inception configure.cmake :295 

CHECK_INCLUDE_FILES (varargs.h HAVE_VARARGS_H)

alibaba/AliSQL configure.cmake :400 

CHECK_INCLUDE_FILES (varargs.h HAVE_VARARGS_H)

Tokutek/mysql-5.5 configure.cmake :244 

CHECK_INCLUDE_FILES (varargs.h HAVE_VARARGS_H)