RFR: WIP repalce stdout by configurable object [v5]

[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:

  Replaced dualstream logger by wrapper
  
  so it can  be later made fully customisable

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Changes:
  - all: https://git.openjdk.org/asmtools/pull/44/files
  - new: https://git.openjdk.org/asmtools/pull/44/files/6e1992c8..4864cce0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=asmtools&pr=44&range=04
 - incr: https://webrevs.openjdk.org/?repo=asmtools&pr=44&range=03-04

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 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