Kill --g-mem-profile [ Was Re: Small patch to show only memory usage. ]

[Owen Taylor <otaylor redhat com>]

I'd like to get rid of all the memory profiling and debugging stuff
in GLib:

 - It's a source of confusion and bug reports (from the way that 
   it doesn't free memory, etc.)

 - Its far less good than possible replacements in terms of 
   ease-of-use and power.

 - You can replace it using either LD_PRELOAD without any recompilation,
   or using the new GLib malloc vtable stuff.

It just doesn't make sense for us to try and support and enhance such 
a crude facility when it doesn't need to be in GLib.

Regards,
                                        Owen