(test): Check for <?xml only, not the full version string.
(test): Check for <?xml only, not the full version string.

ledger/ledger,duncanmortimer/ledger,paulbdavis/ledger,paulbdavis/ledger,duncanmortimer/ledger,afh/ledger,duncanmortimer/ledger,ledger/ledger,afh/ledger,afh/ledger,jwakely/ledger,paulbdavis/ledger,jwakely/ledger,jwakely/ledger,jwakely/ledger,paulbdavis/ledger,duncanmortimer/ledger,paulbdavis/ledger,duncanmortimer/ledger,ledger/ledger,afh/ledger,duncanmortimer/ledger,jwakely/ledger,paulbdavis/ledger,ledger/ledger,jwakely/ledger,jwakely/ledger,ledger/ledger,duncanmortimer/ledger,afh/ledger,paulbdavis/ledger