ANNOUNCE: gstreamermm 0.9.8

[José Alburquerque <jaalburquerque yahoo com>]

gstreamermm provides a C++ API for the gstreamer streaming multimedia
framework. There is work still to be done, but we have working
examples that play video and music.  We also have new core plug-ins
and many base plug-ins (see the generated Doxygen docs modules).

Changes:

0.9.8 (unstable):

* Added Gst::Event::get_flags().
* Added default name overloads for Gst::Bin::create(), Gst::Pad::create() and
 Gst::Pipeline::create().
* Moved const tags to namespace Gst::Tag.
* Added a generic INSTALL file and updated the README to fix bug #556570.
* Removed gstreamermm dependency on gstreamerbasemm to fix bug #560601.  Added
 GstBase::init*() methods with docs that initialize both gstreamermm and
 gstreamerbasemm to compensate so that two init() calls (one for gstreamermm
 and another for gstreamerbasemm) are not needed.
* Added base classes AudioFilter, AudioSink, AudioSrc, BaseAudioSink,
 BaseAudioSrc and CddaBaseSrc in gstreamerbasemm from which many plug-ins
 derive.
* Added the following core plug-ins: Gst::CapsFilter, Gst::FakeSink,
 Gst::FakeSrc, Gst::FdSink, Gst::FdSrc, Gst::FileSink, Gst::FileSrc,
 Gst::Identity, Gst::MultiQueue, Gst::Queue, Gst::Tee and Gst::TypeFind.
* Added the following base plug-ins: GstBase::Adder, GstBase::AlsaMixer,
 GstBase::AlsaSink, GstBase::AlsaSrc, GstBase::AudioConvert,
 GstBase::AudioResample, GstBase::TestSrc, GstBase::CdParanoiaSrc,
 GstBase::ClockOverlay, GstBase::DecodeBin, Gst::FfmpegColorSpace,
 GstBase::GioSink, GstBase::GioSrc, GstBase::GioStreamSink,
 GstBase::GioStreamSrc, GstBase::OggDemux, GstBase::OggMux, GstBase::PlayBin2,
 GstBase::TextOverlay, GstBase::TextRenderer, GstBase::TheoraDec,
 GstBase::TheoraEnc, GstBase::TimeOverlay, GstBase::VideoRate,
 GstBase::VideoScale, GstBase, VideoTestSrc, GstBase::Volume,
 GstBase::VorbisDec, GstBase::VorbisParse, GstBase::VorbisTag,
 GstBase::XImageSink and GstBase::XvImageSink.
* Modified examples to use the plug-ins where possible; added plug-in tests.