hygiene, change signature of truf_mmy_rd() to something that resembles strtod*() et al.

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
chore, adapt read_trod_event() to changed truf_mmy_rd()

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, try truf_mmy_rd() on symbol before strndup()ing it

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
chore, adapt read_series() to changed truf_mmy_rd()

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
hygiene, PEBKAC, use the deconst magic to assign onwards ptr in truf_mmy_rd()

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
Merge branch 'core/trod'

* core/trod:
  hygiene, PEBKAC, use the deconst magic to assign onwards ptr in truf_mmy_rd()
  chore, adapt read_series() to changed truf_mmy_rd()
  minor, try truf_mmy_rd() on symbol before strndup()ing it
  chore, adapt read_trod_event() to changed truf_mmy_rd()
  hygiene, change signature of truf_mmy_rd() to something that resembles strtod*() et al.