Suppress some warnings about pointer typecasting.

Rename confusable argument name

Remove unnecessary header inclusion

clean -Wunused-function when defined DISABLE_STDIO

Add a Test Case for #359 Array Corruption

Add ary_modify to prevent corrupting shared array.

Could you add me to AUTHORS?

Replace Tab with spaces in src/parse.y

Use mrb_calloc if you want zero cleard buffers.

Add tests for Modules