Adds parser for TextAlignConstant, which accepts both "friendly" names
and the UGLY_ONES used in code. Horiz and Vert constant parsers
retrofitted with the same friendliness.

Patch by konstantin.scheglov@gmail.com
Review by rjrjr@google.com

http://gwt-code-reviews.appspot.com/612803

Review by: jgw@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@8347 8db76d5a-ed1c-0410-87a9-c151d255dfc7
13 files changed