Fix tokenization type comparison

Fix tokenization type comparison

The tokenization was built around the types not being allocated to lower
the number of failure points. This was achieved by creating a static
constant global array that holds all the possible values. The type
character pointer in every token then points to a value in this array.

This was exploited to make string comparison faster - instead of
comparing every character, only the address (the raw pointer) was
compared.

This was broken by moving the definition of the static global variable
into a header file. With that every file that includes it gets its own
version of the variable - its own memory - and te comparison fails.

The solution is the make an access function that holds the definition
of the static variable and all the other functions access the variable
through this function instead of directly. Now the variable is only ever
defined inside the function and address comparison works again.