Partially revert r42427. This modifies where mysql command is created, and break appliance tests.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@42542 20353a03-c40f-0410-a6d1-a30d3c3de9de

buildout/instance-profiles/mysql.cfg

@@ -19,6 +19,7 @@ depends =
   ${create-directories:command}
 recipe = erp5.recipe.mysqlserver
 mysql_software_bin = ${software_definition:mysql_software}/bin
+mysql_bin_folder =  ${buildout:data-bin-directory}
 mysql_software_libexec = ${software_definition:mysql_software}/libexec
 mysql_datadir = ${configuration:mysql_datadir}
 mysql_auto_start = false