fixed: in Space: pointers 'name' and 'child_spaces' were not correctly initialized in cctors

added in Space:
- some methods for adding values to an object, such as:
  Space & Space::add(const std::wstring & field, bool val) (bool, short, int, long, long long etc.)
- methods for creating lists:
  void Space::to_list(std::list<std::string> & output_list, bool clear_list) const
  bool Space::to_list(const wchar_t * field, std::list<std::string> & output_list, bool clear_list) const
- methods for converting a value from an object field:
  bool Space::to_bool(const wchar_t * field, bool default_value) const
- methods for testing strings:
  bool Space::is_equal(const char * val) const
  bool Space::is_equal(const std::string & val) const
  bool Space::is_equal(const wchar_t * val) const
  bool Space::is_equal(const std::wstring & val) const
- methods to get the raw pointer to a value from an object, such as:
  bool * Space::get_bool(const wchar_t * field)
  float * Space::get_float(const wchar_t * field)
- methods for finding a child space (used in Space format only)
  Space * Space::find_child_space(const wchar_t * name)
  Space & Space::find_add_child_space(const wchar_t * name)

textstream/textstream.h

@@ -471,7 +471,7 @@ template<typename char_type, size_t stack_size, size_t heap_block_size>
 TextStreamBase<char_type, stack_size, heap_block_size> &
 TextStreamBase<char_type, stack_size, heap_block_size>::operator<<(const PT::Space & space)
 {
-	space.Serialize(*this, true, false);
+	space.serialize_to_space_stream(*this, true);
 
 return *this;
 }