updated centos init script with latest generic-init logic from same branch; some commands don't work yet and will be fixed in subsequent commits
daemonizing tutorial includes a brief paragraph about centos
better (and prettier) use of service functions
replaced tabs with spaces
removed unused var CELERYCTL
multiple node support for centos script
minor refactoring and bugfixes
centos init script: using ls instead of find, minor refactoring
renamed centos init script to celeryd
updated centos init config file
fixed restart bug in centos init script
tests for centos init script
avoiding conflict with built-in function test
commented out example configuration in centos sysconfig file
Merge branch 'mpavlov/centos-init' into 3.0
Updates Changelog