[GRASS5] new vector

Hi all,

i would like to discuss some problems related to new vector format/library i am working on.

1) Little or big? Dig files are written (version 4) in portable vector format which
    is big endian byte order (note for David: I was wrong in my last mail).
    On little endian machines (i386 for example) byte order of each number must be
    changed. My test with d.vect says that such conversion takes 8% of time