Remove misleading wording from DLLCHSETM and DLLCHSETUTF8 message text
These two error messages previously told the user to recompile with, e.g. CHSET=UTF-8. But this is misleading because the build fails if CHSET=UTF-8. Instead the documentation has been updated to tell the user to set $ZROUTINES or ydb_routines to point to $ydb_dist/utf8.
Edited by Berwyn Hoyt