RFR: 8258074: Move some flags related to compiler to compiler_globals.hpp [v3]

[Ioi Lam]

> Many flags in globals.hpp are related to the compiler, and are mostly used only by the compiler source files. These flags should be moved to compiler_globals.hpp
> 
> Examples:
> 
> - CompileCommandFile
> - Tier2CompileThreshold
> - HugeMethodLimit
> 
> This speeds up HotSpot build time, and improves modularity.
> 
> This RFE is the first step -- it moves a few dozen flags that are straight-forward to move. Other flags may be moved by follow-up RFEs.
> 
> Tested with mach5: tier1, builds-tier2, builds-tier3, builds-tier4 and builds-tier5 on mach5, plus locally building arm, aarch64, s390, ppc64, and zero.

Ioi Lam has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'master' into 8258074-move-compiler-globals
 - fixed gtest
 - 8258074: Move some flags related to compiler to compiler_globals.hpp

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/1746/files
  - new: https://git.openjdk.java.net/jdk/pull/1746/files/c218bd66..fc9c673f

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1746&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1746&range=01-02

  Stats: 6071 lines in 178 files changed: 4168 ins; 1363 del; 540 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1746.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1746/head:pull/1746

PR: https://git.openjdk.java.net/jdk/pull/1746