Original commit message from CVS:
* Makefile.am:
* check/Makefile.am:
* check/gst/.cvsignore:
* check/gst/gstobject.c:
* configure.ac:
adding unit testing
* docs/upload.mak:
fixing double vars
* gst/Makefile.am:
disable some unused stuff
* gst/gstbus.h:
* gst/gsttypes.h:
move typedefs for gstbus
* gst/gstelement.c:
* gst/gstelement.h:
add getter/setter for bus and scheduler
add functionality to have (non-fatal) warnings as messages
* gst/gsterror.c:
* gst/gsterror.h:
* gst/gstmessage.c:
* gst/gstmessage.h:
rework API to be more general for warnings as well
* gst/gstobject.c:
fix docs
* tools/gst-launch.c:
fix macros for errors
