No online banking in 2.4.0 installation under Kubuntu

[Paul Abrahams]

I've found the answer, which also explains why only Linux users have seen this 
problem.  When compiling gnucash from source -- at the moment, the only way to 
install it under Linux -- the default compilation does not include access to 
aqbanking or OFX.  To get that access, you have to do this:

  ./configure --enable-aqbanking --enable-ofx

from the source directory.  That information was buried in the text of the 
configure file -- not in the README file or the INSTALL file.