Don't initialize variables that store result as MRB_DUMP_OK. It possibly causes bugs on modifications in the future.
Remove unused substitutions and calculations.
Use type cast not void* but char*. Don't substiture void pointers.
Store to *bin_size if bin_size != NULL.
Clean up code.
Sanity check. As there are implicaton SIZE_MAX >= UINT32_MAX in this code. This assumption may break on some targets which have 16bit memory space.
Don't use int. It decreases portability.   Use size_t as array index and length. It avoids overflow in the extreme situations.
Fix warnings.
Merge pull request #1 from monaka/pr-new-mrb_format

Patches to new_mrb_format