Roland McGrath <roland@redhat.com>
    Include "observer.h", "auxv.h", and "elf/common.h". (struct
        symbol_file_add_from_memory_args) (symbol_file_add_from_memory_wrapper,
        add_vsyscall_page) (_initialize_symfile_mem): Add an inferior_created
        observer, use to load the vsyscall page.
    Update dependencies.
    2004-07-08 Daniel J
    Recognize __kernel_vsyscall as a signal trampoline.
    Replacing 6.1post patch #50 to apply on 6.3.