* [libcroco] Initial port files for libcroco
From the libcroco readme file:
Libcroco is a standalone css2 parsing and manipulation library.
The parser provides a low level event driven SAC like api
and a css object model like api.
Libcroco provides a CSS2 selection engine and an experimental
xml/css rendering engine.
libcroco is part of the GNOME project.
* [libcroco] Build fixes for Linux.
