[Midnightbsd-cvs] src: lib/libmport: add a new error state MPORT_ERR_WARN.

[laffer1 at midnightbsd.org]

Log Message:
-----------
add a new error state MPORT_ERR_WARN.  This is a non fatal error that we could possibly work around.

Change the logic to loop through mirrors to make sense.

fallback to the bootstrap index url if the mirrors list fails.

Modified Files:
--------------
    src/lib/libmport:
        fetch.c (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/fetch.c?r1=1.5&r2=1.6)
        index.c (r1.11 -> r1.12)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/index.c?r1=1.11&r2=1.12)
        mport.h (r1.18 -> r1.19)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/mport.h?r1=1.18&r2=1.19)