NAME
    RemSegment - Removes a resident segment from the resident list (V36)
SYNOPSIS
    success = RemSegment(segment)
    D0                      D1
    BOOL RemSegment(struct segment *)
FUNCTION
    Removes a resident segment from the Dos resident segment list,
    unloads it, and does any other cleanup required.  Will only succeed
    if the seg_UC (usecount) is 0.
INPUTS
    segment - the segment to be removed
RESULT
    success - success or failure.
SEE ALSO
    findsegment(), addsegment()