Remove separate title parameter for read_tps_conf()

Remove separate title parameter for read_tps_conf()

Instead, return the title as *top->name.  Most callers were either
passing too short a buffer compared to what was expected, and/or not
using the title for anything, so this reduces the possibilities for bugs
and simplifies the API.

Minor cleanup in some callers.

Change-Id: If950cca91894e59f548913779e1cde6e908aa0d2