2 more tests submitted from gtalbot.org

Hello all,

2 more tests to the CSS 2.1 test suite:

Margin collapsing, test 1 and 2

All the tests are available (in HTML 4 and XHTML 1.1), downloadable,
reviewable from

http://www.gtalbot.org/BrowserBugsSection/css21testsuite/

Filenames of tests will have to be reviewed...

regards, Gérard