[Ecls-list] Latest changes

[Juan Jose Garcia-Ripoll]

 - ADJUST-ARRAY accepted a fill-pointer even for arrays that did not have any.

 - Instead of using SHORT-FLOAT and LONG-FLOAT as basic floating point types,
   we use SINGLE-FLOAT and DOUBLE-FLOAT now. The names of the C functions have
   changed accordingly (Contributed by Lars Brinkhoff).

 - New commands, :RESTART, :R1, :R2, etc, allow invoking restarts (contributed
   by Chui Tey).

Note that the second change means also that the name of three
functions have changed: make_shortfloat, make_longfloat, lf ->
make_singlefloat, make_doublefloat, df.

Juanjo