[PATCH] Assorted guile-related build fixes

[Bill Nottingham]

I was doing some testing with guile-2.0 and GnuCash, and encountered
the need for the following fixes to make it build.

(Note: it still doesn't *work*, but it at least builds for further
testing.)

Total changes:
 configure.ac                            |   14 ++++++++------
 src/import-export/aqbanking/Makefile.am |    1 +
 src/plugins/bi_import/Makefile.am       |    1 +
 3 files changed, 10 insertions(+), 6 deletions(-)