* Added integer optimization for bit8 channels.
* fixed compiler error

git-svn-id: http://svn.boost.org/svn/boost/trunk@83605 b8fc166d-592f-0410-95f2-cb63ce0dd405
Test cases for subsampled_image and ycbcr color space.

git-svn-id: http://svn.boost.org/svn/boost/trunk@83606 b8fc166d-592f-0410-95f2-cb63ce0dd405
Removed my email address link.

git-svn-id: http://svn.boost.org/svn/boost/trunk@83607 b8fc166d-592f-0410-95f2-cb63ce0dd405
Added gil::io test.

git-svn-id: http://svn.boost.org/svn/boost/trunk@83608 b8fc166d-592f-0410-95f2-cb63ce0dd405