SYNOPSIS
        mapping mkmapping(mixed *arr1, mixed *arr2,...)

DESCRIPTION
        Returns a mapping with indices from 'arr1' and values from
        'arr2'... . arr1[0] will index arr2...[0], arr1[1] will index
        arr2...[1], etc. If the arrays are of unequal size, the mapping
        will only contain as much elements as are in the smallest
        array.

        Normally, mappings are extended by simply inserting new elements.
        This function is useful if you can estimate the needed size of
        the mapping in advance, to reduce the malloc overhead. Any
        unused allocated space will be freed after the current function
        returns.

EXAMPLE
        mkmapping( ({ 1, 2 }), ({ 10, 11 }), ({ 20, 21, 22}))
          returns ([ 1:10;20, 2:11;21 ])

SEE ALSO
        mappings(LPC), mappingp(E), m_indices(E), m_values(E),
        m_add(E), m_delete(E), sizeof(E), widthof(E), unmkmapping(E).
