deleting from dbs with duplicates.
addresses #112

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We want to be able to do 
 make VGRIND=
and not end up having the extra valgrind parameters passed around.
Addresses #105.


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DB->get (on secondary indexes) now call DB->pget instead of having almost identical code.

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Closes #111

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so newbrt/log_header.h and newbrt/log_code.c are generated even if missing.
Closes #60.

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{{{
Added DB_SECONDARY_BAD to db.h
Added DB_CURRENT to db.h

    DB->get         (now returns DB_SECONDARY_BAD when appropriate)
    DB->pget        (now returns DB_SECONDARY_BAD when appropriate)
    ** DBC->c_get   (works with associate)
    ** DBC->c_pget  (added function, works with associate, but not in header yet)
    ** *DBC->c_del  (works with associate)
    *DB->del        (works with associate)

*   May not work properly with duplicates.
*   Question: Do I have to use
        search_val.flags = DB_DBT_MALLOC;
            and
        free(search_val.data);
**  Requires DB_CURRENT to be supported in toku_brt_cursor_get
}}}
addresses #48


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(unless called internally with DB_NO_ASSOCIATE flag set)

Modified test_db_secondary to verify this behavior.
Closes #106

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Rebuild {{{newbrt/log_header.h}}} and {{{newbrt/log_code.c}}} when compiled from withing {{{src}}}.  Fixes #60.


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Add suppressions (generated by --gen-suppressions=all) Some messages just won't suppress, so we had to keep them away.  Fixes #98.

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Make bdb 4.4 be the default for buildheader, and add DB_DBT_APPMALLOC and DB_DBT_MULITPLE.  Fixes #96, #97.

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