Support --enable-debug-logs=no option of configure script (#2)

* Support --enable-debug-logs=no option of configure script

* Undo unintended white space changes

* Undo more unintended white space changes

* Address review comments - thanks Mirko

* Address more review comments - thanks Mirko

src/operators/rx.cc

@@ -45,8 +45,10 @@ bool Rx::evaluate(Transaction *transaction, Rule *rule,
         for (const SMatch& a : matches) {
             transaction->m_collections.storeOrUpdateFirst("TX",
                 std::to_string(i), a.match);
+#ifndef NO_LOGS
             transaction->debug(7, "Added regex subexpression TX." +
                 std::to_string(i) + ": " + a.match);
+#endif
             transaction->m_matched.push_back(a.match);
             i++;
         }