typos

     between the implementations for prime fields and binary fields;

     the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)

     are essentially identical to their ..._GFp counterparts.

     (For simplicity, '..._GFp' prefix has been dropped from various

     internal method names.)

     (For simplicity, the '..._GFp' prefix has been dropped from

     various internal method names.)

     An internal 'field_div' method (similar to 'field_mul' and

     'field_sqr') has been added; this is used only for binary fields.

     [Sheueling Chang Shantz and Douglas Stebila

     (Sun Microsystems Laboratories)]

  *) Optionally dispatch EC_PONT_mul(), EC_POINT_precompute_mult()

  *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()

     through methods ('mul', 'precompute_mult').

     The generic implementations (now internally called 'ec_wNAF_mul'