[Jigs-devel] slow image scaling

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Looks like the problems with processing non sRGB images is alive and well.  
Note the factor of 3 slowdown for processing the last image (all three images 
are about the same size).  But even the fast times (about 5 minutes) are 
pretty dang slow.  I think ImageMagick may still be the preferred solution if 
it is available.  Most people probably don't have images this big.  Still, 
I'd like to try forcing it to use sRGB (at least as an option) in the other 
case. 

	- Brendan

Processing 
/usr3/mcmahan_store/pics/060_cmu/040_Spring_2003/060_Utah_Spring_Break/020_Climbing_in_Snow_Canyon/Elan_Roll_011_velvia_007.png
219282 INFO  [Thread-4]          ImageIOUtil     - Using ImageIO to convert 
/usr3/mcmahan_store/pics/060_cmu/040_Spring_2003/060_Utah_Spring_Break/020_Climbing_in_Snow_Canyon/Elan_Roll_011_velvia_007.png 
to size java.awt.Dimension[width=1549,height=3000]
219283 INFO  [Thread-4]          ImageIOUtil     - isCS_sRGB()=true
537465 INFO  [Thread-4]            ImageUtil     - Scale and draw time is 
318.181s

Processing 
/usr3/mcmahan_store/pics/060_cmu/040_Spring_2003/060_Utah_Spring_Break/040_Peekabo_and_Spooky_Canyons/Elan_Roll_012_velvia_023.png
608214 INFO  [Thread-4]          ImageIOUtil     - Using ImageIO to convert 
/usr3/mcmahan_store/pics/060_cmu/040_Spring_2003/060_Utah_Spring_Break/040_Peekabo_and_Spooky_Canyons/Elan_Roll_012_velvia_023.png 
to size java.awt.Dimension[width=1946,height=3000]
608215 INFO  [Thread-4]          ImageIOUtil     - isCS_sRGB()=true
1012985 INFO  [Thread-4]            ImageUtil     - Scale and draw time is 
404.769s

Processing 
/usr3/mcmahan_store/pics/060_cmu/040_Spring_2003/060_Utah_Spring_Break/050_Brimstone_Canyon/brendan_pentax_1_04.jpg
1044519 INFO  [Thread-4]          ImageIOUtil     - Using ImageIO to convert 
/usr3/mcmahan_store/pics/060_cmu/040_Spring_2003/060_Utah_Spring_Break/050_Brimstone_Canyon/brendan_pentax_1_04.jpg 
to size java.awt.Dimension[width=1916,height=3000]
1044521 INFO  [Thread-4]          ImageIOUtil     - isCS_sRGB()=false
2337548 INFO  [Thread-4]            ImageUtil     - Scale and draw time is 
1293.027s