* [gdk-pixbuf] Fix Linux compilation.

Unlike #6625 this version contains the minimal changes required
to keep other dependencies as untouched as possible.

* [gdk-pixbuf] Bumping CONTROL versions

* [libcroco] Added copy pdbs to portfile.

* [libcroco] Fix missing unoficial-libcroco-targets-debug.cmake...

... file from installation.

* [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.