- Add check of format specifiers in error message strings
- Update error message text accordingly to be equal between all translations


extra/Makefile.am:
  comp_err uses my_cheksum, link with zlib
extra/comp_err.c:
  Add check of format specifiers in error message strings
sql/share/errmsg.txt:
  Update error messages after checks
  ---
  Remove the newly added space in error message, should not be there