** gh_eval_str() now returns an SCM object which is the result of the
evaluation
+** gh_scm2str() now copies the Scheme data to a caller-provided C
+array
+
+** gh_scm2newstr() now makes a C array, copies the Scheme data to it,
+and returns the array
+
+** gh_scm2str0() is gone: there is no need to distinguish
+null-terminated from non-null-terminated, since gh_scm2newstr() allows
+the user to interpret the data both ways.
+
* Changes to documentation
** the $(srcdir)/newdoc hierarchy now contains a new approach to the