* iconv/gconv_int.h (strict gconv_module): Remove all members
associated with regular expressions. Use a simple string as the
from name.
* iconv/gconv_db.c: Remove code handling regular expressions.
* iconv/gconv_conf.c: Likewise.
* iconv/iconv_prog.c: Likewise.
* iconv/gconv_builtin.h: Adjust for change in gconv_conf.c.