libutil section has no data definitions

[Jeff Johnson]

If we look at the table of contents, we see:

   IV. Utility Libraries

        14. Utility Libraries

              14.1. Introduction
              14.2. Interfaces for libz
              14.3. Data Definitions for libz
              14.4. Interface Definitions for libz
              14.5. Interfaces for libncurses
              14.6. Data Definitions for libncurses
              14.7. Interface Definitions for libncurses
              14.8. Interfaces for libutil
              14.9. Interface Definitions for libutil

Notice the libz and libncurses libraries have a Data Definitions section,
libutil does not. There are two headers involved here, pty.h and utmp.h. The
former has no contents that don't relate to libutil, but the latter does, so
I'm not sure how you'd split it. In any case, this isn't really a "problem",
just a strange inconsistency that I thought I'd report.