KOBAYASHI Shuji d2f2f9db51 Remove location info from Exception#inspect ...

Because location info (file name and line number) is kept in the backtrace,
it should not be kept in the result of `inspect` (and the exception object
itself), I think.

### Example

  ```ruby
  # example.rb
  begin
    raise "err"
  rescue => e
    p e
  end
  ```

#### Before this patch:

  ```
  $ bin/mruby example.rb
  example.rb:2: err (RuntimeError)
  ```

#### After this patch:

  ```
  $ bin/mruby example.rb
  err (RuntimeError)
  ```

2019-12-14 22:29:37 +09:00

..

mruby

Remove location info from Exception#inspect

2019-12-14 22:29:37 +09:00

mrbconf.h

Always enable the rational and complex literals

2019-11-19 21:10:59 +09:00

mruby.h

Get keyword arguments with mrb_get_args()

2019-10-06 21:23:55 +09:00