css-writing-modes-3: add parsing tests for text-combine-upright.

there are four files:

* text-combine-upright-parsing-valid-001.html : test cases for valid values
* text-combine-upright-parsing-valid-002.html : test cases for valid values using calc()
* text-combine-upright-parsing-invalid-001.html : test cases for invalid values
* text-combine-upright-parsing-invalid-002.html : test cases for invalid values using calc()
fix the syntax of flags.
css-writing-modes-3: test for text-combine-upright on full-width characters

http://www.w3.org/TR/2014/CR-css-writing-modes-3-20140320/#text-combine-fullwidth says:

> when the combined text consists of more than one character, then any full-width
> characters must first be converted to their non-full-width equivalents

add two test cases and a reference to check that.

* full-width-001.html -- it has full-width characters directly input in the doucment.
* full-width-002.html -- it uses `text-transform: full-width` to achieve the effect.
Merge pull request #558 from myakura/myakura/text-combine-upright-9_1_3_1

LGTM: css-writing-modes-3: test for text-combine-upright on full-width characters
Revert "Merge pull request #558 from myakura/myakura/text-combine-upright-9_1_3_1"

This reverts commit 2514256940c34ba727eacfdb48cfce5840b0870b, reversing
changes made to 6762cd3a55f9a835ded1405f5bef65b7b81b9638.
add test-plan for css-writng-modes3
css-writing-modes3: Insert inline style to test-plan document
Merge pull request #554 from myakura/myakura/text-combine-upright-parsing

LGTM. About calc() function, We have discussed with fantasai.