RFR 8226304: Obsolete the -XX:+FailOverToOldVerifier option

[Harold Seigel]

Hi,

Please review this JDK-14 fix to obsolete the -XX+FailOverToOldVerifier 
option.

Open Webrev: 
http://cr.openjdk.java.net/~hseigel/bug_8226304/webrev/index.html

JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8226304

The fix was tested by running with option FailOverToOldVerifier and 
checking the output:

     > java -XX:+FailOverToOldVerifier -version
    Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option
    FailOverToOldVerifier; support was removed in 14.0
    java version "14-internal" 2020-03-17
                ...

It was regression tested by running Mach5 tiers 1 and 2 tests and builds 
on Linux-x64, Solaris, Windows, and Mac OS X, by running Mach5 tiers 3-5 
tests on Linux-x64, and JCK lang and VM tests on Linux-x64.

Thanks, Harold