functions to plugins.
* ./bootstrap: enhanced the project file generation for plugins; we now
parse makefiles to make this easier.
* ./modules/**/Modules.am: reworked a few makefiles so that they are more
easily parsed.
pf_setformat disappears (it was never called independantly of Open). If
the format needs to be changed, we will have Close/Open. This is much
simpler than before. Please check that I didn't break some plug-ins.
(see my last mail).
* aout: Rewrote our whole lock policy. The output thread now doesn't require
the mixer_lock, which might avoid delays. We will also be able to change
the filter pipelines at runtime.
* Major changes in the handling of dates in the audio output ; still buggy,
but differently.
* Fixed a major bug in the aout pre-filters, preventing to run any other
decoder than liba52.
* p_aout->output.pf_play now has only one argument.
p_buffer now has a i_nb_bytes member. It is possible to indicate for a
format its byterate (necessary for AC3 and SPDIF).
* S/PDIF output seems to be working at last (tested with the file output).
waveout, directx, qnx, beos, win32, macosx, and the AltiVec modules.
* ALL: removed mention of AC3 in favour of A52.
* ./configure.in, ./Makefile*: modules can now be built deeper than 1
directory. As a consequence, the build is even slower (but I'm fixing
this) and make clean doesn't work anymore.