RFR: 327: git webrev: Print the location of the generated webrev upon successful completion [v2]

[Zhao Song]

> Originally, git webrev command would return nothing when executed successfully. It is not a good experience for user. 
> 
> Right now, when executed successfully, the location of index.html will be printed.
> 
> Also, added a --quiet flag if the current silent behavior is required.

Zhao Song has updated the pull request incrementally with one additional commit since the last revision:

  optimize the way to generate a URL

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

Changes:
  - all: https://git.openjdk.org/skara/pull/1379/files
  - new: https://git.openjdk.org/skara/pull/1379/files/d487b78b..598d889e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=skara&pr=1379&range=01
 - incr: https://webrevs.openjdk.org/?repo=skara&pr=1379&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/skara/pull/1379.diff
  Fetch: git fetch https://git.openjdk.org/skara pull/1379/head:pull/1379

PR: https://git.openjdk.org/skara/pull/1379