[KARAF-3288] Support unset JAVA_HOME on Solaris

    This closes #49

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commit 72af704dc0ffa5c3540153df9c599b66551c93bf
Author: Kevin Earls <kevin@kevinearls.com>
Date:   2014-10-15T11:56:35Z

    KARAF-3288 Update script to correctly set JAVA_HOME on Solaris

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