\crescTextCresc... 2.10 vs 2.12

[Frédéric Bron]

I upgraded to 2.12 and dicovered that \crescTextCresc is not set for
ever instead of just for the next crescendo.
Is is possible to come back to 2.10 behaviour?
I think it was better because:

2.10: type \crescTextCresc only for text crescendo (once before)
2.12: type \crescTextCresc before and \crescHairpin after (2 commands)
or type \crescHairpin only if needed but then you do not remember if
you need it or not, only when you build the pdf. Another possiblity is
to type \crescTextCresc or \crescHairpin in front of all crescendo so
twice commands compared to 2.10.

Also convert-ly does not do the full job as it just change the name of
the command, not the behaviour.

Frédéric Bron