changes to allow efficient tk/incr tcl compatible configure/cget - refactored code to allow to parameterize handling of required flag for parameters - don't flag an error when configure is called on an initialized object (logic: if the object is initialized, configure must have been called before, and the required action must have been already taken).
nsfShadow.c - bump MethodEpoch when a tcl ::rename command happens on a nsf method (which might be cached in a Tcl_Obj) This fixes a crash reported by Arthur Schreiber nsf.c: - make NsfInstanceMethodEpochIncr() and NsfObjectMethodEpochIncr() accessible from all files using nsfInt.h - remove experimental code (backslash escaping for "," in parameter option parse