* template/encdb.h.tmpl: define encoding index macros to use the index
  statically from C source.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41727 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* string.c (rb_str_inspect): use encoding index macros in encdb.h.

* string.c (str_scrub0): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41728 b2dd03c8-39d4-4d8f-98ff-823fe69b080e