RFR: repalce stdout by configurable object [v13]

[Jiří Vaněk]

> See https://github.com/openjdk/asmtools/pull/38 for full story
> The PR will be enhanced by handling of two streams in compiler logger. Then the stdout work can continue.

Jiří Vaněk has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  Enabled -g for jcoder to be set from external code

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Changes:
  - all: https://git.openjdk.org/asmtools/pull/44/files
  - new: https://git.openjdk.org/asmtools/pull/44/files/da8630aa..124f9c51

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=asmtools&pr=44&range=12
 - incr: https://webrevs.openjdk.org/?repo=asmtools&pr=44&range=11-12

  Stats: 48 lines in 1 file changed: 34 ins; 0 del; 14 mod
  Patch: https://git.openjdk.org/asmtools/pull/44.diff
  Fetch: git fetch https://git.openjdk.org/asmtools pull/44/head:pull/44

PR: https://git.openjdk.org/asmtools/pull/44