AqBanking

Result of "make format".

No longer complain about missing BICs.

BICs are no longer required in SEPA transactions. The BIC is also used
if present but a missing BIC should no longer be handled as an error.

Some bank servers might still require the BIC, in that case the user will...

BUILD: Added Makefile target "typedefs".

Removed backend version definitions.

The version of the backends was already linked to the version of
AqBanking. Now that those backends are no longer independent modules
there is no need to maintain thoise versions.

Changed name of AB_Banking_*WithProfile() to AB_Banking_*LoadProfile().

Chose a name which surprises the least.

AqBanking: Hide class imexporter. Movew convenience functions to AB_BANKING.

Removed another class from the API.
We already had a number of convenience functions both in banking*.h headers
and in imexporter*.h headers. Those have now been moved to banking_imex.h....

aqhbci-tool: Removed unneeded code.

Added tools aqpaypal-tool and aqebics-tool.

Basically these are also simple stubs which call the backends control function
to execute commands as is the case with aqhbci-tool.

aqbanking-cli: Fixed a typo.

Re-added tool aqhbci-tool4.

This is basically the same as "aqbanking-cli --control=aqhbci COMMAND",
but all documentation available references the tool "aqhbci-tool4" so
to ease the transition to AqBanking6 this tool has been added.