expand SkLua to handle creation of its own State

add lua sample

BUG=
R=robertphillips@google.com

Review URL: https://codereview.chromium.org/15742009

git-svn-id: http://skia.googlecode.com/svn/trunk@9247 2bbb7eff-a529-9590-31e7-b0007b416f81
6 files changed