Rename flex-align to flex-item-align.

Rename flex-align to flex-item-align.
https://bugs.webkit.org/show_bug.cgi?id=75929

Reviewed by Darin Adler.

Source/WebCore:

The spec has changed and now flex-align will be set on
the flexbox itself.

* css/CSSComputedStyleDeclaration.cpp:
(WebCore::CSSComputedStyleDeclaration::getPropertyCSSValue):
* css/CSSParser.cpp:
(WebCore::CSSParser::parseValue):
* css/CSSPrimitiveValueMappings.h:
(WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
(WebCore::CSSPrimitiveValue::operator EFlexAlign):
* css/CSSProperty.cpp:
(WebCore::CSSProperty::isInheritedProperty):
* css/CSSPropertyNames.in:
* css/CSSStyleApplyProperty.cpp:
(WebCore::CSSStyleApplyProperty::CSSStyleApplyProperty):
* css/CSSStyleSelector.cpp:
(WebCore::CSSStyleSelector::applyProperty):
* rendering/RenderBox.cpp:
(WebCore::RenderBox::sizesToIntrinsicLogicalWidth):
* rendering/RenderFlexibleBox.cpp:
(WebCore::RenderFlexibleBox::layoutAndPlaceChildren):
(WebCore::RenderFlexibleBox::alignChildren):
* rendering/style/RenderStyle.h:
(WebCore::RenderStyleBitfields::flexItemAlign):
(WebCore::RenderStyleBitfields::setFlexItemAlign):
(WebCore::RenderStyleBitfields::initialFlexItemAlign):
* rendering/style/RenderStyleConstants.h:
* rendering/style/StyleFlexibleBoxData.cpp:
(WebCore::StyleFlexibleBoxData::StyleFlexibleBoxData):
(WebCore::StyleFlexibleBoxData::operator==):
* rendering/style/StyleFlexibleBoxData.h:

LayoutTests:

* css3/flexbox/css-properties-expected.txt:
* css3/flexbox/flex-align-column.html:
* css3/flexbox/flex-align-vertical-writing-mode.html:
* css3/flexbox/flex-align.html:
* css3/flexbox/line-wrapping.html:
* css3/flexbox/orthogonal-flex-directions.html:
* css3/flexbox/script-tests/css-properties.js:
* fast/css/getComputedStyle/computed-style-expected.txt:
* platform/mac/fast/css/getComputedStyle/computed-style-without-renderer-expected.txt:
* svg/css/getComputedStyle-basic-expected.txt:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@104625 268f45cc-cd09-0410-ab3c-d52691b4dbfc