It seems the strings in `qt/bitcoin.cpp` are not translated.

E.g. `qt/bitcoin-qt -lang=cz -datadir=/tmp/a2` gives me a warning in English that the datadir does not exist.

#else
#define UNUSED
#endif
static const char UNUSED *bitcoin_strings[] = {
QT_TRANSLATE_NOOP("bitcoin-core", "Bitcoin Core"),
QT_TRANSLATE_NOOP("bitcoin-core", "The %s developers"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"(1 = keep tx meta data e.g. account owner and payment request information, 2 "
"= drop tx meta data)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"-maxtxfee is set very high! Fees this large could be paid on a single "
"transaction."),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"A fee rate (in %s/kB) that will be used when fee estimation has insufficient "
"data (default: %s)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Accept connections from outside (default: 1 if no -proxy or -connect/-"
"noconnect)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Accept relayed transactions received from whitelisted peers even when not "
"relaying transactions (default: %d)"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Allow JSON-RPC connections from specified source. Valid for <ip> are a "
"single IP (e.g. 1.2.3.4), a network/netmask (e.g. 1.2.3.4/255.255.255.0) or "
"a network/CIDR (e.g. 1.2.3.4/24). This option can be specified multiple times"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Bind to given address and always listen on it. Use [host]:port notation for "
"IPv6"),
QT_TRANSLATE_NOOP("bitcoin-core", ""
"Bind to given address and whitelist peers connecting to it. Use [host]:port "