Post-merge fix: replace plugin extension output.

mysql-test/t/plugin_not_embedded.test

@@ -7,6 +7,7 @@
 
 GRANT INSERT ON mysql.plugin TO bug51770@localhost;
 connect(con1,localhost,bug51770,,);
+--replace_regex /\.dll/.so/
 eval INSTALL PLUGIN example SONAME $HA_EXAMPLE_SO;
 --error ER_TABLEACCESS_DENIED_ERROR
 UNINSTALL PLUGIN example;