packaging: make client-install no longer depends on the mount.xtreemfs binary because it was made optional e.g., when compiling libxtreemfs for buildroot.
packaging: make client-install no longer depends on the mount.xtreemfs binary because it was made optional e.g., when compiling libxtreemfs for buildroot.

kleingeist/xtreemfs,harnesscloud/xtreemfs,harnesscloud/xtreemfs,rbaerzib/xtreemfs,kleingeist/xtreemfs,jswrenn/xtreemfs,jswrenn/xtreemfs,stanik137/xtreemfs,rbaerzib/xtreemfs,kleingeist/xtreemfs,harnesscloud/xtreemfs,harnesscloud/xtreemfs,stanik137/xtreemfs,stanik137/xtreemfs,stanik137/xtreemfs,kleingeist/xtreemfs,stanik137/xtreemfs,harnesscloud/xtreemfs,jswrenn/xtreemfs,jswrenn/xtreemfs,jswrenn/xtreemfs,rbaerzib/xtreemfs,rbaerzib/xtreemfs,jswrenn/xtreemfs,stanik137/xtreemfs,harnesscloud/xtreemfs,stanik137/xtreemfs,kleingeist/xtreemfs,stanik137/xtreemfs,rbaerzib/xtreemfs,harnesscloud/xtreemfs,jswrenn/xtreemfs,rbaerzib/xtreemfs,kleingeist/xtreemfs,harnesscloud/xtreemfs,kleingeist/xtreemfs,kleingeist/xtreemfs,rbaerzib/xtreemfs,jswrenn/xtreemfs,rbaerzib/xtreemfs