Set the correct location of the amanda binaries on CentOS and added an architecture check on it as well since the binaries are in different places. This has been tested on x86_64 but not on i386
adding arch test to the amandad executable as well since the /usr/sbin/amandad symlink doesn't exist on CentOS 5
Merge pull request #8 from StFS/master

Fixed locations for binaries on CentOS (for both x86_64 and i386)