Followup fix to r9990.
Followup fix to r9990.

* libsvn_fs/fs.c (base_hotcopy):  oops, DB_LOG_AUTOREMOVE is only
  defined if compiling against db4.2 or later, so only use it inside
  an #ifdef.

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