[gtk+] (15 commits) Created branch css-fixes

[Alexander Larsson <alexl src gnome org>]

The branch 'css-fixes' was created.

Summary of new commits:

  c9a3332... Add generation of private g-types for private headers
  1a68aff... css: Add _gtk_css_parser_try_enum
  3e24029... css: Parse enums with new case-insensitive helper
  8fb4b13... css: Break out enum parse/print helper
  2a42fad... css: Use enum parsing for background repeat style
  d85aabe... Rename GTK_CSS_REPEAT_STYLE_NONE to GTK_CSS_REPEAT_STYLE_ST
  91dcf40... css: Convert border style parsing to use enums
  c276f53... Make computed value of border-width 0 if border-style none
  f100c31... Add reftest to test border-style: none
  9e1671c... Add GtkCssArea enum
  be5c5ad... Implement background-clip and background-origin
  180fe16... Update background-area reftest for background-clip
  3e40c57... Reftest background-origin with various background-clip valu
  1ca09fd... css: Always draw the bg color under the bg image
  76f4536... Fix up background-origin now that we correctly handle the b