r23390 - gnucash/trunk - Improve guile testing in configure.ac

[Geert Janssens]

Author: gjanssens
Date: 2013-11-13 10:50:59 -0500 (Wed, 13 Nov 2013)
New Revision: 23390
Trac: http://svn.gnucash.org/trac/changeset/23390

Modified:
   gnucash/trunk/configure.ac
Log:
Improve guile testing in configure.ac

Use guile specific macros to determing the guile executable to use.
Unfortunately the macro names may be different on various supported
platforms. So we have to run some extra tests to determine which
macro names we need exactly.