[PATCH] Introducing the UserPOD and UserClass types

[Farid Zaripov <Fa...@kyiv.vdiweb.com>]

   ChangeLog:
   * rw_value.h: struct X renamed to the struct UserClass;
   (struct UserPOD): New type for using in tests as POD type;
   (struct UserData): New structure to be used in UserPOD and UserClass.
   (_rw_user_class_fmat_init): New static variable to install
   the formatting collback function for UserClass type.
   * value.cpp: Use UserClass::data_.val_ instead of UserClass::val_;
   (__rw_from_char): new function to create array of the UserXXX type
   from string;
   (_rw_mismatch): new function compare the array of the UserXXX type
   and string.

Farid.