* Merged patch from Chris Smowton to enable importation of
MP4 files [GitHub pull request #000029].
* Added prerequisites for MP4 importation in 'INSTALL'.
* Modified 'conf/Makefile.am' to install 'rd-bin.conf' in
$(sysconfdir).
* Updated 'INSTALL' to include information about the '--sysconfdir'
flag.
* Updated 'get_distro.sh' to detect RHEL 7 correctly.
* Modified the installation script to work on RHEL 7 in
'rivendell.spec.in'.