Remove DirectDraw & DirectSound plugins, as they've moved to Good

Remove DirectDraw & DirectSound plugins, as they've moved to Good

Original commit message from CVS:
* configure.ac:
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-bad-plugins-docs.sgml:
* docs/plugins/gst-plugins-bad-plugins-sections.txt:
* docs/plugins/gst-plugins-bad-plugins.args:
* docs/plugins/inspect/plugin-directdraw.xml:
* docs/plugins/inspect/plugin-directsound.xml:
* sys/Makefile.am:
* sys/directdraw/Makefile.am:
* sys/directdraw/gstdirectdrawplugin.c:
* sys/directdraw/gstdirectdrawsink.c:
* sys/directdraw/gstdirectdrawsink.h:
* sys/directsound/Makefile.am:
* sys/directsound/gstdirectsoundplugin.c:
* sys/directsound/gstdirectsoundsink.c:
* sys/directsound/gstdirectsoundsink.h:
* win32/MANIFEST:
* win32/gst.sln:
* win32/vs6/libgstdirectdraw.dsp:
* win32/vs6/libgstdirectsound.dsp:
* win32/vs7/libgstdirectdraw.vcproj:
* win32/vs7/libgstdirectsound.vcproj:
* win32/vs8/libgstdirectdraw.vcproj:
* win32/vs8/libgstdirectsound.vcproj:
Remove DirectDraw & DirectSound plugins, as they've moved to Good