Fix Windows port (spawn and assuan engine).

Fix Windows port (spawn and assuan engine).

2011-02-02  Marcus Brinkmann  <mb@g10code.com>

        * configure.ac (NEED_LIBASSUAN_VERSION): Bump to 2.0.2 for system hooks.

src/
2011-02-02  Marcus Brinkmann  <mb@g10code.com>

        * assuan-support.c (my_socket, my_connect): New functions.
        (_gpgme_assuan_system_hooks): Add my_Socket, my_connect.
        * priv-io.h (_gpgme_io_socket): New prototype.
        * w32-io.c (pid_to_handle, handle_to_oid, fd_to_handle): Remove macros.
        (is_socket): Remove function.
        (_gpgme_io_spawn) [HAVE_W32CE_SYSTEM]: Remove some dead code.
        (_gpgme_io_spawn): Translate handles before DuplicateHandle them.