Upgrade to Maven Jacoco plugin 0.7.4

Release 0.7.4 (2015/02/26)
Fixed Bugs

    Restored exec file compatibility with version 0.7.2 by fixing missing probes in case of try/catch blocks which are jump targets. (GitHub #286).

Release 0.7.3 (2015/02/19)
New Features

    For offline instrumemtation agent configuration supports system properties replacements. Implementation based on pull request of GitHub user 'debugger' (GitHub #262).
    Exclude dynamically generated classes from instrumentation for better interoperability with JMockit, analysis contributed by Rogério Liesenfeld (GitHub #272).

Fixed Bugs

    Instrumented bytecode now compatible with Android ART runtime, analysis and fix contributed by Allen Hair (GitHub #265).