Fixes for api changes.

Fixes for api changes.

2004-02-19  Not Zed  <NotZed@Ximian.com>

        * providers/*/camel-*-provider.c
        (camel_provider_module_init): Fixes for api changes.

        * camel-provider.c (camel_provider_load): no longer take session
        argument.  the providers are global resources.
        (camel_provider_init): dont return anything anymore.  (error?)
        call from camel_init now.  Use a recursive lock too.

        * camel-session.c (camel_session_register_provider)
        (camel_session_list_providers, camel_session_get_provider): Moved
        to camel-provider, camel_provider_register/list/get.
        (vee_provider): moved to camel-provider.c