Log Message:
Update to 1.0.4:
* Headers are now in ${PREFIX}/include/speex/ (but a copy is still
  in ${PREFIX}/include for compat reasons).
* Pseudo-gapless playback (i.e. playback has the same number of
  samples)
* Fixed a potential bug (unconfirmed) that might cause a segfault
  in special circumstances.

Also includes a shlib major bump, so update DEPENDS in buildlink3.mk.