Fix non-verbose build

[Ralf Habacker]

Fridrich Strba schrieb:
> Attached fixes the non-verbose build by using _dbus_verbose instead of
> _dbus_verbose_real directly
>   
thanks for this pointer. I used _dbus_verbose_real  instead of 
_dbus_verbose because i did not want to print the file name and line 
number.

There seems still an area which requires some thinking about how to 
solve:  _dbus_system_logv  is used by bus_context_log  for system 
logging. On unix the default system logger will be used, on windows what 
should be used ? 

There come OutputDebugString into my mind., which is easy to implement 
and could used for a first implementation.

Another solution may be to use windows event logging documented in 
http://msdn.microsoft.com/en-us/library/aa385780%28VS.85%29.aspx  - but 
this needs definitly more work.

Any comments ?

Regards
 Ralf