#451 Injector API without using linux queues

[Renier Morales]

To inject events into the simulator, Linux queues are
used, but it has become a cumbersome way to do it and
hard to mantain.

Proposing a plugin abi call ('inject_event') that
any plugin can implement to receive an 'injected' event
from the outside in order to test the event/resource
processing in the infrastructure.

By using the daemon, then you can have a program to
inject events using a call exported
by the OpenHPI library (through oHpi.h), and another
program inspecting and reporting the
results as seen in the HPI implementation.

[David Judkovics]

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DaveJ: Adding API to marshaling code