Log Message:
Update to a snapshot from GIT head.  The current revision seems better
to me than the release.  Bump rev.

Changes include:

    Guard MMX get_fast_path() with pixman_have_mmx()

    Use -fvisibility=hidden by default.

    Add a PIXMAN_EXPORT macro that expands to the appropriate GCC magic.
    Various formatting fixes.

    Make the tables static; remove unused flag

    Set maskRepeat to FALSE when the function is NEED_SOLID_MASK

    Conditionalize MMX code with USE_MMX

    Don't skip fbFetch/fbStore when PIXMAN_FB_ACCESSORS is enabled.

    pixman_composite_rect_general_accessors skips the fetch / store steps by
    setting store to NULL when the op is ADD or OVER and the dest format is
    [ax]8r8g8b8.  This optimization is only valid when no accessors are
    in play.