Remove assorted G_OBJECT casts where unnecessary.

Remove assorted G_OBJECT casts where unnecessary.

2001-12-13  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* gdk-pixbuf-animation.c, gdk-pixbuf-loader.c, gdk-pixpuf.c,
	io-gif-animation.c, io-gif.c, io-tiff.c, test-loaders.c: Remove
	assorted G_OBJECT casts where unnecessary.

	* gdk-pixbuf-loader.c: Call g_object_ref and g_object_unref
	instead of gdk_pixbuf_animation_ref and gdk_pixbuf_animation_unref
	resp.

	* gdk-pixbuf-csource.c, io-bmp.c, io-gif-animation.c, io-ico.c,
	io-jpeg.c, io-png.c, io-pnm.c, io-ras.c, io-tga.c, io-wbmp.c,
	io-xbm.c, io-xpm.c, test-gdk-pixbuf.c: Dito for gdk_pixbuf_ref and
	gdk_pixbuf_unref.

	* Makefile.am, pixops/Makefile.am: Compile everything with
	-DG_DISABLE_DEPRECATED -DGDK_PIXBUF_DISABLE_DEPRECATED

	* gdk-pixdata.c: Use g_ascii_strup() instead of g_strup().

	* io-xpm.c: Use g_ascii_strcasecmp() instead of g_strcasecmp().

	* demos/testpixbuf-drawable.c, demos/testpixbuf-save.c,
	demos/testpixbuf-scale.c, demos/testpixbuf.c: Call g_object_ref
	and g_object_unref instead of gdk_pixbuf_ref and gdk_pixbuf_unref
	resp.