information in buildconfig.lua could be autogenerated

[Bluestone]

at the moment (I think)

buildconfig.lua contains duplicated info - all the unit names and descriptions copied out
smenu has an ugly way of loading this info that relies on having the same hardcoded category names in two different files

@funk: can i replace this with a piece of code that uses UnitDefs properties to determine a units category and constructs essentially exactly the same table?

(the code to do this already exists in the gadget that does the unit icon assignments).

[Bluestone]

the reason i'd like to this was because i planned to replace quite a few of the unit descs with more sensible ones! also, in particular missions i might give units special roles.