Progress: FLL/FSS related changes, populate more ASCII characters.

Progress: FLL/FSS related changes, populate more ASCII characters.

It occurred to me that I should follow the same practices as the FSS process where I use range for the FLL/FSS Identifier processing.
Change the behavior to do so.

It also occurred to me that I should try to avoid processing both a dynamic string's used as well as the range.
The FLL/FSS Identifier code only accepts a string for this reason.
It will likely be a good idea to change the other FSS code to accept a f_string_t instead of a f_string_static_t.

Add the initial support for FSS header processing with support for multiple FLL/FSS Identifiers.

Add and use the FSS specific default memory allocators.

Complete more of the hardcoded ASCII strings.
Unless I missed something, all that is left now is to consider adding the extended ASCII.