Changes requiring reconfiguration since September 2008:

2008-09-25: new setup introduced to avoid insisting that everyone
reconfigure after minor changes.

2011-03-18: new @DBAPI_DRIVER@ variable for the sake of --without-dbapi builds.

2011-05-17: new @ncbi_java@ variable for --with-jni builds.

2011-10-05: new @FEATURES@ variable for the unit test framework.

2012-02-27: new @TOUCH@ variable to avoid hard-coded paths.
