We build an equivalent of the jacoco-agent.jar which contains classes from org.jacoco.core,
org.jacoco.agent and org.jacoco.agent.rt packages but also classes from asm 5.0.1.

However, Jacoco depends on classes that do not exist in Android (java.lang.instrument.* or
javax.management.*) for runtime instrumentation only. The ART compiler would reject those classes
when they are either in the bootclasspath (core, frameworks, ...) or system apps.

Since we only use offline instrumentation for code coverage (using Jack) and do not execute these
classes at runtime, we simply not compile them here.

We also need to modify the source code to cut dependencies to the classes that we exclude from the
compilation. The changes are surrounded by "BEGIN android-change" and "END android-change". Here
is the list of the changes:

1) Remove the creation of JmxRegistration in org.jacoco.agent.rt.internal.Agent.
2) Change default OutputMode to none in org.jacoco.core.runtime.AgentOptions