Fixed acceptable versions, it wouldn't accept 2.4.2 properly.

configure

@@ -18,7 +18,7 @@ TARGET="2.4.3"
 # sys.version) below in "best" to "worst" order, not including the
 # target version.  Up to six acceptable python versions are allowed.
 # Do not include the target version number in this list!
-ACCEPTABLE="2.4.1 2.4.2."
+ACCEPTABLE="2.4.1 2.4.2"
 
 # provide the executable names for all the acceptable versions
 # (and the target version) below