ext/neon/gstneonhttpsrc.*: added iradio-mode support as in gnomevfssrc to enable...

ext/neon/gstneonhttpsrc.*: added iradio-mode support as in gnomevfssrc to enable connections with icydemux that will ...

Original commit message from CVS:
* ext/neon/gstneonhttpsrc.c:
* ext/neon/gstneonhttpsrc.h:
added iradio-mode support as in gnomevfssrc to enable
connections with icydemux that will send title tag messages on
shoutcast/icecast streams. I've also added iradio properties
iradio-name, iradio-genre, iradio-url.
added user-agent property because some shoutcast streams don't return
data if the GET requests don't have a User-Agent.
* win32/common/libgstneon.dsp:
use debug version of libneon in debug mode