Prior to this change, there was a lot of duplicated code within the dump
routines, which would call out to a common `print_section` routine that
had global state. This causes problems from a multi-threaded perspective
in that multiple calls to `x52d_config_save_file` were not MT-safe.
In addition, the dump logic was written such that it could only be used
in the config dump. It is desired that we add functionality to return
the formatted config value as a string in a different part of the code
as well.
This change brings in the shared state into a stack variable, and
changes the dump functions to return a const char *, thereby allowing
for greater reuse, as well as getting rid of the shared state. However,
there is still a little bit of shared state in the `int_dumper` routine.
This can be ignored for now, but we should possibly figure out how to
get rid of the shared state altogether.
nirenjan