RPM builds

I've made a few changes to the hobbit.spec file which make it easier for
me to customize the building of hobbit RPMs.  I've attached the new spec
file and the modified init and logrotate files, in case anyone is
interested.

To customize the RPM, change the definitions at the top of the spec
file.  Place the init and logrotate files in your RPM_SOURCE_DIR (along
with the hobbit tarball).  Then run 'rpmbuild -ba hobbit.spec'

I thought this might be useful to others who want to change some of the
defaults.

  -Dan