Reviewed by Mark Rowe.

        Use pthread instead of GThread where possible in the GTK+ port. This
        fixes issues with global initialisation, particularly on GTK+/Win32
        where a late g_thread_init() will cause hangs.

        Fix the pthread conditionals in the FTP code to correctly define
        threadsafe *_r functions on Windows. Partly fixes the GTK+/Win32
        build.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@37732 268f45cc-cd09-0410-ab3c-d52691b4dbfc