Convert RPM init script to fall in line with Redhat style

[joecaswell]

This pull request changes the init script installed by RPM's to fall in line with Redhat and Fedora style guides. Pid files have been added for start/stop/status functions.

[jaredmorrow]

Looking at this / testing it tonight and tomorrow.

[jaredmorrow]

Looks like the -progname directive is enough for fedora/rhel systems

(sandbox)[buildbot@riak-test-fedora-17 files]$ ps ax | grep beam.smp
17998 pts/2    Ssl+   0:06 /usr/lib64/riak/erts-5.9.1/bin/beam.smp -K true -A 64 -W w -- -root /usr/lib64/riak -progname riak -- -home /var/lib/riak -- -boot /usr/lib64/riak/releases/1.3.1/riak -embedded -config /etc/riak/app.config -pa /usr/lib64/riak/lib/basho-patches -name riak@127.0.0.1 -setcookie riak -smp enable -- console
18402 pts/3    Ssl+   0:00 /usr/lib64/riak-cs/erts-5.9.1/bin/beam.smp -K true -A 64 -W w -- -root /usr/lib64/riak-cs -progname riak-cs -- -home /var/lib/riak-cs -- -boot /usr/lib64/riak-cs/releases/1.3.1/riak-cs -embedded -config /etc/riak-cs/app.config -pa /usr/lib64/riak-cs/lib/basho-patches -name riak-cs@127.0.0.1 -setcookie riak -- console
18827 pts/4    Ssl+   0:00 /usr/lib64/stanchion/erts-5.9.1/bin/beam.smp -K true -A 64 -W w -- -root /usr/lib64/stanchion -progname stanchion -- -home /var/lib/stanchion -- -boot /usr/lib64/stanchion/releases/1.3.1/stanchion -embedded -config /etc/stanchion/app.config -pa /usr/lib64/stanchion/lib/basho-patches -name stanchion@127.0.0.1 -setcookie riak -- console
19020 pts/0    R+     0:00 grep --color=auto beam.smp

[jaredmorrow]

The problem with pid files when we don't usually use them is the weirdness if you mix using the init.d script with the regular riak script:

[buildbot@riak-test-fedora-17 init.d]$ riak start
[buildbot@riak-test-fedora-17 init.d]$ sudo ./riak ping
pong
[buildbot@riak-test-fedora-17 init.d]$ sudo ./riak status
riak is stopped
[buildbot@riak-test-fedora-17 init.d]$ sudo ./riak start
Starting riak: Node is already running!
                                                           [FAILED]
[buildbot@riak-test-fedora-17 init.d]$ echo $?
1

[jaredmorrow]

@joecaswell after I spoke to @Vagabond about the clash of the riak script and the init.d script, we think the best way forward is to move the pidfile creation into the runner script so it gets created no matter how you start / stop riak. So, I will hold off on this PR for now, then make it depend on another PR that creates the pid files. It might take me a bit, b/c I'll have to figure out where each OS keeps pid files!

[jaredmorrow]

Tested start/stop/hardstop/ping compared to runner script commands of same name, everything now acts the same and doesn't step on each other's toes with the .pid files.