RFR: 8152818: Javadoc must support module options supported by javac.

[Kumar Srinivasan]

Hi,

Please review the webrev [1] which fixes [2]. The central theme is, to 
dispatch
all javac related options, off to javac's argument processing, so that 
it is future
proofed and the arguments are processed correctly as required by javac.

Thanks
Kumar

[1] http://cr.openjdk.java.net/~ksrini/8152818/webrev.00/
[2] https://bugs.openjdk.java.net/browse/JDK-8152818