[Rev 01] RFR: Add support for offline and local builds

[Erik Helin]

The pull request has been updated with additional changes.

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Added commits:
 - b70c5274: Add checks for x86_64 and x64

Changes:
  - all: https://git.openjdk.java.net/skara/pull/237/files
  - new: https://git.openjdk.java.net/skara/pull/237/files/66a6b56b..b70c5274

Webrevs:
 - full: https://webrevs.openjdk.java.net/skara/237/webrev.01
 - incr: https://webrevs.openjdk.java.net/skara/237/webrev.00-01

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/skara/pull/237.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/237/head:pull/237

PR: https://git.openjdk.java.net/skara/pull/237