* gh_test_repl.c (c_vector_test): same as gh_test_c.c
* gh_test_c.c (c_vector_test): some improvements on the vector
routines test.
* gh.h (gh_vector): this used to exist but do the wrong thing.
Now it (almost) does the right thing, though it takes a list
instead of the individual arguments. I need to see how it could
be done right.
(gh_list_to_vector): added this function as a macro. Corresponds
to Scheme's (list->vector ...).
(gh_vector_to_list): added this function as a macro. Corresponds
to Scheme's (vector->list ...).
* gh_data.c (gh_vector_ref): renamed from gh_vref to
gh_vector_ref, so that it resembles the Scheme routines more.
(gh_vector_set): renamed from gh_vset to gh_vector_set, so that it
resembles the Scheme routines more.
(gh_make_vector): this used to be (stupidly) called gh_vector().
This is the right name, since it does the same thing as the Scheme
(make-vector ...) procedure.