RFR (XL) 8081519 Split globals.hpp to factor out the Flag class

[Vladimir Kozlov]

Renaming and other changes looks good to me.

But my suggestion about new directory was to have it on the same level 
as runtime/ directory and not inside it. I also thought you will move 
globals* files and test_globals.cpp but I am fine with leaving them as 
they are.

Thanks,
Vladimir

On 3/30/18 10:27 AM, Gerard Ziemski wrote:
> Hi all,
> 
> Please review this large and tedious (sorry), but simple fix that accomplishes the following:
> 
> #1 factor out the command option flag related APIs out of globals.hpp/.cpp into its own dedicated files, i.e. jvmFlag.hpp/.cpp
> #2 moved all jvmFlag* files into its own dedicated folder (i.e. src/hotspot/share/runtime/jvmFlag/)
> #3 merge Flag (too generic name) and CommandLineFlag classes and rename them as JVMFlag
> #4 cleanup globals.hpp includes originally added by the JEP-245
> 
> Note: the renamed file retain their history, but one needs to add “follow” flag, ex. “hg log -f file”
> 
> https://bugs.openjdk.java.net/browse/JDK-8081519
> http://cr.openjdk.java.net/~gziemski/8081519_rev2
> 
> Passes Mach5 hs_tier1-tier5, jtreg/runtime/CommandLine/OptionsValidation/TestOptionsWithRanges tests.
> 
> 
> cheers
>