RFR: repalce stdout by configurable object [v11]

[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 updated the pull request incrementally with one additional commit since the last revision:

  Implemented library-like input and output
  
  This commit is adding byte[]/String  input/output clasases for direct
  library usage.
  Added tests, advertising how simple is usage of those inputs/outputs
  
  There are two hunks, which fixes issues ovberlooked in previous
  refactorings:
   - traceln now correctly calls getOutputs
   - jdec now uses proper logger insted of accidental stderr

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

Changes:
  - all: https://git.openjdk.org/asmtools/pull/44/files
  - new: https://git.openjdk.org/asmtools/pull/44/files/0e82d6d0..11d211f7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=asmtools&pr=44&range=10
 - incr: https://webrevs.openjdk.org/?repo=asmtools&pr=44&range=09-10

  Stats: 448 lines in 12 files changed: 438 ins; 2 del; 8 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