added utterance type branching code for interrogative
allow subgraph matching and generalize subject-object functions
improve interrogative sentence form and added interrogative test atomspace
more utterance type code changes
slightly improve pronoun code and included subgraph matching
increase the range of how far back a noun can be mentioned
added hack for multiple speech acts per utterance type
improve test atomspace and README
start work on a super-simplified 2x2 sudoku
Add a 2x2 sudoku puzzle solver
Extend the test to a 3x3 sudoku test
Expand the unordered-link test
extend the unordered UTest some more
More unordered UTest expansion
More expansion of the unordered utest
misc tweaks
Merge pull request #1089 from linas/sudo

expand the pattern matcher unordered link unit test
Take a shot at fixeing the niordered link fail
Fix the unordered utest, which was borken.

Turns out it failed because the test itself was bad, not the
pattern matcher ...
The other half of the unordered fix.

Oops, the previous commit failed to save & restore all of the needed
state.