Major changes.

- Changes some malloc/memset couples to calloc.
- Makes all the tags and output strings pointer to strings.
- Use polarssl for ecb mode.
- Probably a whoe bunch more correction I already forgot about.
Refactoring.

- Moved the conversion methods to aes_all_modes.h interface.
- Prints the tag and output only for the modes supporting them.
Adds vectors for all supported modes.