Bump version number
rename the build_disjunct_for* function
Minor SAT hacking for dusjuncts
Change the signature of one method
Another signature change
Track the original expression
Pas around the exp to whereever it is needed
More SAT disjunct hacking
More SAT hacking ...
more SAT hacking
Add enable_wordgraph_display.
Change comments. Add initial defs for quotes & CAP.

- Change comments for EMPTY-WORD.zzz.
- Add quotes as empty words.
- Add dict CAP handling words as empty words,
  including a connector for them on LEFT-WALL.
Add wordgraph.c and wordgraph.h.
Changes due to the way the Wordgraph version works.

- Alternatives-adding function name changed.
- Validate that the words are not already split morphemes,
  to prevent an infinite loop.
Reflect parameter change for the alternative-add function.
Match 4.0.dict.m4.
Add Wordgraph stuff to the Sentence_s struct.

Also fix some typos.
Add type definitions for the Wordgraph structures.
Changes for the Wordgraph versions.

- Replace build_sentence_expressions() by flatten_wordgraph().
- Add handling for deleting Wordgraph structures.
- Totally rewrite sane_linkage_morphism().
Replace firtupper check by gword WS_FIRSTUPPER.