* lib/adlint/cc1/lexer.rb : Refactor a bit in order to clarify intention
  to take tail part of an array.
* lib/adlint/cc1/value.rb : Ditto.
* lib/adlint/cpp/eval.rb : Ditto.
* lib/adlint/cpp/macro.rb : Ditto.
* lib/adlint/cpp/subst.rb : Ditto.
* lib/adlint/exam/c_builtin/cc1_check.rb : Ditto.
* spec/adlint/cc1/syntax_spec.rb : Ditto.