css3 line-break tests

FYI, I intend to submit a number of tests related to the CSS3 line-break
property, particularly those that relate to testing the functionality or
fixes deriving from:

[1] https://bugs.webkit.org/show_bug.cgi?id=89235
[2] https://bugs.webkit.org/show_bug.cgi?id=105692

Some preliminary reftests have already been included in [3], but need to be
finalized and retargeted for the CSS test suite format.

[3] https://bugs.webkit.org/attachment.cgi?id=172397&action=prettypatch

Regards,
Glenn