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2. Adding an "PMA_mysqlDie()" inside the wrapper (just like within "PMA_query_as_cu" is also a problem since sometimes we may not want the error to be displayed.

so i'll change the function call so that you can send a variable stating that you do not want the error to displayed and per default display it, ok? (if i am using my function anyway i prefer to have the function check for errors for reasons of lazyiness)

this is done. please try using PMA_query_as_cu($sql,FALSE) to not have it die

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For example, just define a "pmadb" that does not exist in the config file and try to do something with phpMyAdmin: you always get a MySQL error message while we should only ignore bookmark/relation... features in this case.

now the relation_inc checks if it can find the pmadb and otherwise will disable relation features.