Bugfix: Mistakes in disable macros and remove redundant check.

Bugfix: Mistakes in disable macros and remove redundant check.

Fix numerous disable macro mistakes.
There are several functions that do not have the correct amount of disable macros.
There are several disable macros that have mistakes in the name structure.

The functions private_f_utf_string_append() and private_f_utf_string_append_nulless() are accidentally defined in the dynamic.h header file in addition to the string.h header file.
These should only be defined in one location and the ones defined in dynamic.h are incorrectly located.

Remove redundant errno check for ENOMEM in private_fl_directory_list().