ENG-6421, output command line and JVM arguments to the logfile.
ENG-6421, remove logging for JVM arguments, keep output of
command line arguments on single line.
ENG-6421, lift jvm arguments message and classpath info to the top of logfile.
Update RealVoltDB.java

Add common prefix to command line info messages.
Merge pull request #1414 from VoltDB/ENG-6421

ENG-6421, output command line and JVM arguments to the logfile.