tempo marking in 2.2.5

[Russ Ross]

I'm using the cygwin version of Lilypond 2.2.5 and noticed that tempo
markings seem to have gone away since 2.2.2.  An unchanged source file
that included:

\tempo 4=58

printed <note>=58 using 2.2.2 and nothing under 2.2.5.  I ran the file
through convert-ly in case anything had changed in the syntax, but it
didn't do anything.  Is this an intentional change or a bug?  I can't
test it on other versions at the moment since I'm limited to cygwin.

Thanks,

Russ