DiD S5: made use of filter_condition
DiD S6: simplified some code
Made more use of [filter_condition]
Did S9.3: made more use of [filter_condition]
DiD S10: code cleanup, and made use of [filter_condition]
DiD S11: code cleanup, and yes, [filter_condition]
Fixed some backwards logic in CREATE_ADVISOR
Dropped unused SPEAK macro

Technically, it still is used in the commented S2 Ed/Shaun joke line,
but that's not coming back
Merge branch 'master' of github.com:wesnoth/wesnoth