RFR: 201: git-info should by default show all options

[Erik Helin]

Hi all,

please review this patch that makes `git-info` by default show all information
for a commit. I also made all the flags configurable and restructured the
output to make it more human-friendly.

Thanks,
Erik

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Commits:
 - 221a940c: skara-201

Changes: https://git.openjdk.java.net/skara/pull/328/files
 Webrev: https://webrevs.openjdk.java.net/skara/328/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-201
  Stats: 116 lines in 1 file changed: 79 ins; 23 del; 14 mod
  Patch: https://git.openjdk.java.net/skara/pull/328.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/328/head:pull/328

PR: https://git.openjdk.java.net/skara/pull/328