THRIFT-858. build:  Have bootstrap.sh check for a suitable autoconf version before running

A slightly better version of the same functionality as contributed by David Reiss.

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@987312 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/configure.ac b/configure.ac
index 02888fb..e5c59c1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,7 +17,7 @@
 # under the License.
 #
 
-AC_PREREQ(2.59)
+AC_PREREQ(2.65)
 
 AC_INIT([thrift], [0.5.0-dev])