RFR (S): 8143958: CDS Shared flags need constraint function

[Gerard Ziemski]

hi all,

Please review this small fix which adds constraints to CDS flags. Please note that the max range value is based on the sum of min values of the other 3 flags, so setting one flag’s value to max while leaving the other 3 flags at their defaults will trigger constraint failure, which test/runtime/CommandLine/OptionsValidation/TestOptionsWithRanges.java accounts for.

https://bugs.openjdk.java.net/browse/JDK-8143958
http://cr.openjdk.java.net/~gziemski/8143958_rev1

Passes JPRT hotspot and RBT CommandLine/OptionsValidation/TestOptionsWithRanges on all platforms.