'scm_memory_error' was deprecated in 2014 in commit
c2247b782a and removed in 2017 in commit
c248ea10be. This is a followup.
* libguile/error.h (SCM_MEMORY_ERROR): Remove.
* doc/guile-api.alist: Remove 'scm_memory_error'.
* doc/ref/api-control.texi (Handling Errors): Likewise.
(Dynamic Wind): Use 'scm_misc_error' instead of 'scm_memory_error'.
* libguile/__scm.h:
* libguile/deprecated.h (SCM_CHAR_CODE_LIMIT): Move declaration here
from __scm.h.
* libguile/feature.c:
* module/ice-9/deprecated.scm (char-code-limit): Move definition here.
* test-suite/tests/regexp.test: Update to not use char-code-limit.