From Wim:

an update for configure to support p3 configuration. There are
basically two modifications:

 1) instead of using 'print' use 'sys.stdout.write' b/c in p2 print is a
    statement, in p3 it is a function; the new code works for both
 2) re-order the set of locations to look for libpythonx.y.so to make the
    config lib (which contains .a rather than .so) last


git-svn-id: http://root.cern.ch/svn/root/trunk@35694 27541ba8-7e3a-0410-8455-c3a389f83636