Upgrade to Maven Jacoco plugin 0.7.9

Release 0.7.9 (2017/02/05)
Fixed Bugs

    "java.lang.ClassFormatError: Short length on BootstrapMethods in class file" caused by bug in ASM library (GitHub #462).
    Do not recompute frames in case of large methods, otherwise java.lang.ClassNotFoundException might be thrown (GitHub #177).
    ExecutionDataWriter.FORMAT_VERSION is not a compile-time constant (GitHub #474).
    Maven goal "prepare-agent" should not overwrite existing property value if execution was skipped (GitHub #486).

API Changes

    JaCoCo.ASM_API_VERSION removed (GitHub #474).

Non-functional Changes

    JaCoCo now depends on ASM 5.2.
    OSGi metadata now generated automatically and additionally include uses directives, Require-Capability attribute, and export of all internal packages with x-internal:=true directive (GitHub #211).
    Removed OSGi attributes that were mistakenly added in version 0.6.1 into jacocoant.jar that contains all dependencies (GitHub #211).