RFR(XS): 8032386: Argument auto-correct suggests arguments which are constant in the binary

[Gilles Duboscq]

Hello,

As i wrote in the bug report [1]:
With a product build (note that PrintMethodFlushing is a 'develop' flag):

> java -XX:+PrintMethodFlushing
Unrecognized VM option 'PrintMethodFlushing'
Did you mean '(+/-)PrintMethodFlushing'?
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

This will probably confuse users.

As a fix, I propose to ignore arguments which are constant in the
binary while trying to find a fuzzy match [2]. I think the policy is
to act as if constant options didn't exist in product builds so this
is probably better than telling the user that this option can not be
set in the current build.

-Gilles

[1] https://bugs.openjdk.java.net/browse/JDK-8032386
[2] http://lafo.ssw.uni-linz.ac.at/fuzzy-constant.diff