add the stringinfo definitions and some functions in nodetype.h
add the stringinfo definitions and some functions in nodetype.h

mikebrachmann/gprom,mikebrachmann/gprom,mikebrachmann/gprom,IITDBGroup/gprom,IITDBGroup/gprom,mikebrachmann/gprom,mikebrachmann/gprom,mikebrachmann/gprom,IITDBGroup/gprom,IITDBGroup/gprom,mikebrachmann/gprom,IITDBGroup/gprom,IITDBGroup/gprom