* configure.ac: Add quotes to the new sys/utsname.h check to see if it   fixes the centos buildbot.
* configure.ac: Add quotes to the new sys/utsname.h check to see if it
  fixes the centos buildbot.

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