patches for pixbuf loaders

[Soeren Sandmann <sandmann daimi au dk>]

I just attached a new file to #50187.  It contains a lot of new tests
and fixes for several loaders.  

Most of the stuff comes from the patches Matthias Clasen sent to this
list

Here is the Changelog entry:


+2001-09-01  Soeren Sandmann  <sandmann daimi au dk>
+
+	* io-pnm.c: Robustness fixes for pnm loader
+
+	* io-gif.c: Make gif loader survive TEST_RANDOMLY_MODIFY
+
+	* io-xpm.c (parse_color): detect very long color strings
+
+	All of the above from Matthias Clasen (matthiasc poet de)
+
+	* test-images.h: add tests:
+		- four valid ppm's, eight invalid (matthiasc poet de)
+		- one invalid xpm (matthiasc poet de)
+		- one valid tga, one invalid (sandmann daimi au dk)
+		- one invalid tiff (sandmann daimi au dk
+
+	* test-loaders.c: enable tests for ppm, png, gif, tga, tiff, xpm
+	
+	* io-tiff.c (gdk_pixbuf__tiff_image_stop_load): TIFFClientOpen can
+	fail - detect it when it happens
+
+	* io-tga.c (gdk_pixbuf__tga_load_increment): Fail if there is too
+	much data in file
+	
+	* gdk-pixbuf-io.c: moved wbmb check after ico check to avoid false
+	positives
+
 Thu Aug 30 08:30:03 2001  Matthias Clasen  <matthiasc poet de>
 
 	* gdk-pixbuf-loader.c (gdk_pixbuf_loader_close): Propagate

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