[crac] RFR: Draft: Win/Mac build for CRaC [v2]

[Roman Marchenko]

> Please ignore this PR for now.
> Currently it is for testing purposes.

Roman Marchenko has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 14 commits:

 - Merge branch 'crac' into win_mac_build
 - Merge branch 'crac-extract' into win_mac_build
 - Merge branch 'crac' into crac-extract
 - Getting rid of crac::Linux
 - Removing trailing spaces
 - Refactoring - extracted crac* files
 - Merge branch 'crac' into win_mac_build
 - Removing extra spaces
 - Merge remote-tracking branch 'origin/crac' into win_mac_build
 - Fixing crac::doit()
 - ... and 4 more: https://git.openjdk.org/crac/compare/f0cdb1fb...baf1b982

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Changes: https://git.openjdk.org/crac/pull/82/files
 Webrev: https://webrevs.openjdk.org/?repo=crac&pr=82&range=01
  Stats: 1763 lines in 41 files changed: 1142 ins; 580 del; 41 mod
  Patch: https://git.openjdk.org/crac/pull/82.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/82/head:pull/82

PR: https://git.openjdk.org/crac/pull/82