Update to Speex

[Jean-Marc Valin]

Hi,

The Speex library split into libspeex and libspeexdsp is now in
mainline. There's just one minor packaging problem I hadn't thought
about. Basically, the idea was for both libraries to be independent. I
managed to do that and remove inter-dependencies. The only thing left in
common are two small header files: speex_types.h and
speex_config_types.h that simply define the basic speex types
(spx_int16_t, spx_int32_t, and unsigned) for the architecture. This
means that libspeex and libspeexdsp would be independent, but
libspeexdsp-dev would have to depend on libspeex-dev (or vice versa).
Any suggestion or recommendations on how to make things easier to package?

	Jean-Marc