Bug 946273 part 1: Add reftests for box-sizing on horizontal flex container and on flex items with "width" set in horizontal container. r=mats
Bug 946273 part 2: Add reftest for box-sizing on flex items with "flex-basis" set, instead of "width". r=mats

--HG--
rename : layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1a.html => layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1b.html
Bug 946273 part 3: Add reftests for box-sizing on vertical flex container and on flex items in vertical container. r=mats

--HG--
rename : layout/reftests/flexbox/flexbox-box-sizing-on-container-horiz-1-ref.html => layout/reftests/flexbox/flexbox-box-sizing-on-container-vert-1-ref.html
rename : layout/reftests/flexbox/flexbox-box-sizing-on-container-horiz-1.html => layout/reftests/flexbox/flexbox-box-sizing-on-container-vert-1.html
rename : layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1-ref.html => layout/reftests/flexbox/flexbox-box-sizing-on-items-vert-1-ref.html
rename : layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1a.html => layout/reftests/flexbox/flexbox-box-sizing-on-items-vert-1a.html
rename : layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1a.html => layout/reftests/flexbox/flexbox-box-sizing-on-items-vert-1b.html