Modernization (Structure, Coding Style etc...)

[a4lg]

ssdeep needs modernization. Because this program has long history, some part of the code is getting old. As a part of major program restructuring, I'm doing some modernization.

• Coding style changes
  To make program consistent, easy to read and easy to contribute, coding style of ssdeep will be updated to relatively major one.
• Deprecating some language features
  ssdeep uses some features on C/C++ language that are inconsistent and make the program confusing. Uses of those features will be removed.
• Portability improvements
  Except some library part, I'm going to make the program portable as possible.
• Readability improvements

Coding Style Changes

• 1 indent == 4 spaces
• no tabs
• similar to K&R
• basically limited to 78 columns (but with exceptions)

Deprecateing Language Features

• Alternative operators (and, or and not)
  Use &&, || and !.

Portability

• Portable integer types
  Some uses of non-portable types (uint8_t and uint64_t) will be changed to make the program portable. Note that uint32_t argument of fuzzy_hash_buf will be preserved for now.