Change the "PRAGMA stats" command to report size values in LogEst units.

The eliminates the need for sqlite3LogEstToInt() unless non-standard
compile-time options are used, so leave it out except in those cases.

FossilOrigin-Name: 832c237fcbe83dd4f5a18a06acb0aeb7e2b9e712

src/sqliteInt.h

@@ -3686,7 +3686,11 @@ LogEst sqlite3LogEstAdd(LogEst,LogEst);
 #ifndef SQLITE_OMIT_VIRTUALTABLE
 LogEst sqlite3LogEstFromDouble(double);
 #endif
+#if defined(SQLITE_ENABLE_STMT_SCANSTAT) || \
+    defined(SQLITE_ENABLE_STAT3_OR_STAT4) || \
+    defined(SQLITE_EXPLAIN_ESTIMATED_ROWS)
 u64 sqlite3LogEstToInt(LogEst);
+#endif
 
 /*
 ** Routines to read and write variable-length integers.  These used to