Followup to r31936: Add a generated file to the list of private includes to make autogen.sh happy.
Followup to r31936: Add a generated file to the list of private includes to make
autogen.sh happy.

* build.conf:
  (private-built-includes): Add a JavaHL-generated header file.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion