RFR: added handling of zips, implants [v3]

[Alexandre Iline]

> Instr updated to handle zips and implants with the plugin

Alexandre Iline has updated the pull request incrementally with one additional commit since the last revision:

  added license, removed an experimental class

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Changes:
  - all: https://git.openjdk.org/jcov/pull/34/files
  - new: https://git.openjdk.org/jcov/pull/34/files/aad8d82c..0f4c76e6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jcov&pr=34&range=02
 - incr: https://webrevs.openjdk.org/?repo=jcov&pr=34&range=01-02

  Stats: 57 lines in 2 files changed: 24 ins; 33 del; 0 mod
  Patch: https://git.openjdk.org/jcov/pull/34.diff
  Fetch: git fetch https://git.openjdk.org/jcov pull/34/head:pull/34

PR: https://git.openjdk.org/jcov/pull/34