configure error

[Christian Stimming]

Derek Atkins schrieb:
> Actually, it's looking like a recent change to configure.in or
> one of the m4 files is setting the autoconf language to C++
> and causing no end to grief.  Hampton can reproduce it and
> is looking into it.

Oops, this might go on me -- the macros/openhbci.m4 test 
AM_PATH_OPENHBCI recently changed to C++ language. I guess I forgot to 
switch back to the original language there...

Christian