reorganized some error codes.

added ssl library check to configure.ac
corrected wrong function definitions in chr.h
added MPI_NODE

qse/lib/sed/err.c

@@ -27,8 +27,10 @@ const qse_char_t* qse_sed_dflerrstr (
 	static const qse_char_t* errstr[] =
  	{
 		QSE_T("no error"),
-		QSE_T("internal error that should never have happened"),
+		QSE_T("other error"),
 		QSE_T("not implemented"),
+		QSE_T("subsystem error"),
+		QSE_T("internal error that should never have happened"),
 
 		QSE_T("insufficient memory"),
 		QSE_T("invalid parameter or data"),