small change for surface realization
Helper Functions for work on NLG
style corrections and documentations
set InterpretationLinkas well
preliminary version of surface realization
change the return values of helper functions to list of atoms
add surface-realization.scm to SCM_PRELOAD
documentation
Merge pull request #920 from AmeBel/SuReal

SuReal(surface realization) initial version
ThatRule preprocessing proposal