[fluid-dev] glib changes checked in

[josh]

I just checked in some initial changes which make glib 2.10+ a  
dependency for FluidSynth, cleans up a lot of platform specific code  
in favor of glib provided functions and adds initial support for WIN32  
TCP server support (not yet tested).

Change overview:
- Moved code in fluid_io.[ch] to fluid_sys.[ch] and added WIN32  
support, removed fluid_io.[ch]
- fluid_utime() and fluid_curtime() now use glib
- fluid_thread implementation now uses glib
- mutexes now using glib
- removed a bit of code in fluid_defsfont.h which had originally been  
ripped from glib
- WIN32 support for fluid_socket related code


For the moment I have just kept the FluidSynth named macros/functions,  
defined them as aliases, rather than replace every usage of them with  
the glib equivalents.  We may or may not want to do that in the future.

The WIN32 TCP server support code was not tested and I'm not even sure  
it will build.  If someone could test this that would be great.  The  
WITHOUT_SERVER option should be removed from src/config_win32.h to try  
the server code.  There might be other stray #ifdef WIN32 directives  
that still need to be removed though.  Building with glib will be an  
additional requirement which needs to be sorted out.

Some notes on using glib:
Replace code which verifies function inputs with g_return_if_fail and  
g_return_val_if_fail (i.e., programming errors)

We should probably avoid using glib memory allocation functions,  
especially when allocating lots of memory, since they terminate the  
application instead of returning NULL


Testing and feedback welcome!
    Josh