Update: IKI improvements, cleanups, and bugfixes.

Update: IKI improvements, cleanups, and bugfixes.

The IKI project has fallen behind in some of the practices and is more consistent.
- Expose the delimit array to the caller rather than operating on it internally.
  - This makes IKI more consistent with FSS and improves extensibility.
- Fix the global string names and macro need to follow the appropriate naming structure.
- Use strings rather than characters in the defines.
- Get rid of some macros, replacing them with functions.
- Use the *_increase() and *_increase_by() functions.

The FSS projects are now passing the delimit management to the callers.
IKI is now updated to do the same.
New data types, such as f_iki_delimit_t, are provided to achieve this.

When there are multiple separators, a colon ':', a valid IKI data might be skipped.
This is happening for two reasons:
1) Incorrect increment of the location after identifying a non-IKI defining colon.
2) The seek function is not stopping on special characters like a colon.

The iki_read program is updated to reflect these changes.
A new structure, called iki_data_t, is provided to simplify the arguments being passed around.

The iki_write program is updated to reflect these changes.

The make program is updated to reflect these changes.