fix(xenperf): fix a core assignation problem for node-related events

Before, for node-related problem, when scopenode_mask was filled, the
integers used for setting the mask were let as integer instead of
long integers, so wrong core were assigned when #core > 31.
Now xenperf use long integers.
Merge branch 'hotfix-1.0.4' into benchmark-toolbox
fix(toolbox): fix the opreport parsing

Before the fix, if several events were specified, then the parsing was
failing.
Now it works.
feat(toolbox): add new native benchmark

Add benchmark for swaptions and fluidanimate.
Moreover, add a sleep between the oproperf kill and the log moving to
let the time to oproperf handler to parse and produce their log.
fix(toolbox): fix the interactive mfks

In xen-clone and xen-set-home, there is an mkfs.ext4 command which
is interactive under Ubuntu, so add a yes command piped into.