changed Build_FeatureSet to Merge_FeatureSet
changed Build_FeatureSet to Merge_FeatureSet

dcchivian/kb_util_dylan,dcchivian/kb_util_dylan,dcchivian/kb_util_dylan,dcchivian/kb_util_dylan,dcchivian/kb_util_dylan,dcchivian/kb_util_dylan