shape-margin parsing & computed style tests
fixed description of test
changed expected result for shape-margin % to absolute length
fixed small bug
added test functions for shape-image-threshold
shape-image-threshold parsingt tests
Merge branch 'shape-image-threshold-parsing' of git://github.com/rhauck/csswg-test
move files to new directory structure

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rename : contributors/adobe/submitted/shapes/shape-outside/values/shape-image-threshold-000.html => css-shapes-1/shape-outside/values/shape-image-threshold-000.html
rename : contributors/adobe/submitted/shapes/shape-outside/values/shape-image-threshold-001.html => css-shapes-1/shape-outside/values/shape-image-threshold-001.html
rename : contributors/adobe/submitted/shapes/shape-outside/values/shape-image-threshold-002.html => css-shapes-1/shape-outside/values/shape-image-threshold-002.html
rename : contributors/adobe/submitted/shapes/shape-outside/values/shape-image-threshold-003.html => css-shapes-1/shape-outside/values/shape-image-threshold-003.html
rename : contributors/adobe/submitted/shapes/shape-outside/values/shape-margin-000.html => css-shapes-1/shape-outside/values/shape-margin-000.html
rename : contributors/adobe/submitted/shapes/shape-outside/values/shape-margin-001.html => css-shapes-1/shape-outside/values/shape-margin-001.html
rename : contributors/adobe/submitted/shapes/shape-outside/values/shape-margin-002.html => css-shapes-1/shape-outside/values/shape-margin-002.html
rename : contributors/adobe/submitted/shapes/shape-outside/values/shape-margin-003.html => css-shapes-1/shape-outside/values/shape-margin-003.html
rename : contributors/adobe/submitted/shapes/shape-outside/values/shape-margin-004.html => css-shapes-1/shape-outside/values/shape-margin-004.html
rename : contributors/adobe/submitted/shapes/shape-outside/values/shape-margin-005.html => css-shapes-1/shape-outside/values/shape-margin-005.html