Re: [css3-namespace] Empty String Namespaces

I made a mistake in the empty default namespace test: I should have set it
to something else before checking behavior, in case the UA treated
@namespace ""; as invalid and threw it out. (Apparently KHTML and Webkit
do this.)

Corrected tests and results:

Tests:

    http://lists.w3.org/Archives/Public/www-archive/2008Apr/att-0068/empty-default-namespace.xml
    http://lists.w3.org/Archives/Public/www-archive/2008Apr/att-0066/empty-namespace-prefix.xml

Test results:
                   empty default matches || empty prefix matches
                      no-NS  |  any-NS   ||   no-NS   |  any-NS
----------------+-----------+-----------++-----------+-----------+
Firefox 2       |    yes    |    yes    ||    yes    |    no     |
Firefox 3       |    yes    |    yes    ||    yes    |    no     |
Opera 9.25      |    yes    |    no     ||    no     |    no     |
Opera 9.5       |    yes    |    no     ||    no     |    no     |
Konqueror 3.5.8 |      invalid rule     ||    yes    |    yes    |
Safari 3.1.1    |      invalid rule     ||    yes    |    no     |
Safari Nightly  |      invalid rule     ||    yes    |    no     |

~fantasai