Includes the following fixes taken from trvrnrths-qt:
- Ensure we have a first cell to measure when checking required table
height
- Handle page break edge case with exactly fitting last table row
In the case where the last table row on a page fitted exactly no
extra offset was afforded to the next row. This resulted in no
space being left for the painting of the table header on the next
page.
- Fix segfault when checking heights for pagination if table body does
not have a cell at 0,0
See https://github.com/ariya/phantomjs/pull/11291 and
https://github.com/ariya/phantomjs/pull/11490.
Trevor North